Name: Takuto Niki
Country: Japan
Birthdate: 12.10.87, 37 years
ATP ranking: 890
TOP ranking's position: 278 (23.03.15, 172 points)
Points: 16
Prize money: 176.596 $
Matches total: 640
Win: 363
%: 56.72 %
Country: Japan
Birthdate: 12.10.87, 37 years
ATP ranking: 890
TOP ranking's position: 278 (23.03.15, 172 points)
Points: 16
Prize money: 176.596 $
Matches total: 640
Win: 363
%: 56.72 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2022 | 15/16 | 12/13 | 3/3 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2021 | 7/19 | 7/19 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 1/2 | 1/1 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 30/21 | 30/20 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2018 | 36/24 | 28/17 | 6/4 | 0/2 | 2/1 | 0/0 | 0/0 |
| 2017 | 43/29 | 38/25 | 2/1 | 2/1 | 1/2 | 0/0 | 0/0 |
| 2016 | 34/25 | 32/20 | 0/1 | 1/2 | 1/2 | 0/0 | 0/0 |
| 2015 | 36/26 | 33/23 | 1/1 | 1/1 | 1/1 | 0/0 | 0/0 |
| 2014 | 53/23 | 46/19 | 5/1 | 1/2 | 1/1 | 0/0 | 0/0 |
| 2013 | 29/23 | 24/19 | 2/1 | 0/0 | 3/3 | 0/0 | 0/0 |
| 2012 | 23/17 | 15/12 | 3/2 | 0/0 | 3/2 | 2/1 | 0/0 |
| 2011 | 28/19 | 14/11 | 8/6 | 0/0 | 1/2 | 5/0 | 0/0 |
| 2010 | 21/18 | 12/10 | 5/4 | 0/0 | 2/3 | 0/0 | 2/1 |
| 2009 | 4/9 | 1/3 | 2/3 | 0/0 | 1/3 | 0/0 | 0/0 |
| 2008 | 3/5 | 2/3 | 0/0 | 0/0 | 1/2 | 0/0 | 0/0 |
| 2007 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 363/277 | 295/216 | 37/27 | 5/10 | 17/22 | 7/1 | 2/1 |
| perc. % | 56.72 % | 57.73 % | 57.81 % | 33.33 % | 43.59 % | 87.5 % | 66.67 % |
Takuto Niki / Fixtures
| no matches found |
Takuto Niki form / surface: Hard
Takuto Niki / surface: Hard
| 28.09.22 | 1st round | Issei Okamura | Takuto Niki | 6-3, 7-63 |  | match details |  M25 Kashiwa | Hard |
| 08.09.22 | 2nd round | Yuki Mochizuki | Takuto Niki | 6-2, 7-66 | | match details | M25 Sapporo | Hard |
| 07.09.22 | 1st round | Takuto Niki | Kazuma Kawachi | 3-6, 6-1, 6-1 |  | match details | ||
| 02.09.22 | 2nd round | Yamato Sueoka | Takuto Niki | 6-3, 7-5 | | match details | M25 Sapporo | Hard |
| 01.09.22 | 1st round | Takuto Niki | Rimpei Kawakami | 6-3, 1-6, 7-5 | | match details | ||
| 24.08.22 | 1st round | Yuta Kawahashi | Takuto Niki | 6-2, 6-1 | | match details |  M15 Changwon | Hard |
| 28.07.22 | 2nd round | Isaac Becroft | Takuto Niki | 6-75, 6-2, 6-2 | | match details |  M15 Caloundra | Hard |
| 27.07.22 | 1st round | Takuto Niki | Wishaya Trongcharoenchaikul | 6-4, 6-1 | | match details | ||
| 24.07.22 | 1/4 | Dane Sweeny | Takuto Niki | 6-1, 6-3 | | match details | M15 Caloundra | Hard |
| 23.07.22 | 2nd round | Takuto Niki | Aaron Addison | 6-0, 6-4 | | match details | ||
| 23.07.22 | 1st round | Takuto Niki | Chanchin Sookton-Eng | 2-6, 6-2, 6-1 | | match details | ||
| 08.06.22 | 1st round | Andre Ilagan | Takuto Niki | 6-1, 1-6, 7-5 | | match details |  M25 Harmon | Hard |
| 03.06.22 | 1/4 | Tatsuma Ito | Takuto Niki | 6-1, 6-2 | | match details | M25 Harmon | Hard |
| 02.06.22 | 2nd round | Takuto Niki | Geun Jun Kim | 2-6, 7-66, 7-64 | | match details | ||
| 31.05.22 | 1st round | Takuto Niki | Camden Camacho | 6-1, 6-3 | | match details | ||
| 30.04.22 | 1/2 | Jose Statham | Takuto Niki | 6-3, 7-63 | | match details |  M15 Chiang | Hard |
| 29.04.22 | 1/4 | Takuto Niki | Omar Jasika | 1-0, Omar Jasika - retired | | match details | ||
| 28.04.22 | 2nd round | Takuto Niki | Dayne Kelly | 6-75, 7-613, 6-4 | | match details | ||
| 27.04.22 | 1st round | Takuto Niki | Nitin Kumar Sinha | 6-4, 2-6, 6-3 | | match details | ||
| 21.04.22 | 2nd round | Yuta Shimizu | Takuto Niki | 6-4, 6-4 | | match details | M15 Chiang | Hard |
| 20.04.22 | 1st round | Takuto Niki | Makoto Ochi | 6-3, 7-66 | | match details | ||
| 13.04.22 | 1st round | Seongchan Hong | Takuto Niki | 6-3, 6-4 | | match details | M15 Chiang | Hard |
| 10.03.22 | 2nd round | Aaron Addison | Takuto Niki | 7-62, 7-64 | | match details | M25 Bendigo | Hard |
| 09.03.22 | 1st round | Takuto Niki | Andrew Harris | 6-2, 6-3 | | match details | ||
| 02.03.22 | 1st round | Philip Sekulic | Takuto Niki | 6-75, 7-62, 7-65 | | match details | M25 Bendigo | Hard |
| 29.09.21 | 1st round | Dylan Salton | Takuto Niki | 6-2, 7-65 | | match details |  M25 Pretoria | Hard |
| 21.09.21 | 1st round | Mateus Alves | Takuto Niki | 6-3, 6-4 | | match details | M25 Johannesburg | Hard |
| 15.09.21 | 1st round | Jeremy Beale | Takuto Niki | 6-0, 6-4 | | match details | M25 Johannesburg | Hard |
| 09.09.21 | 2nd round | Masamichi Imamura | Takuto Niki | 6-2, 6-3 | | match details |  M15 Monastir | Hard |
| 08.09.21 | 1st round | Takuto Niki | Lucca Pinto | 6-2, 6-2 | | match details | ||
| 01.09.21 | 1st round | Guy Orly Iradukunda | Takuto Niki | 2-6, 6-2, 6-3 | | match details | M15 Monastir | Hard |
| 28.07.21 | 1st round | Luca Giacomini | Takuto Niki | 6-4, 7-5 | | match details |  M15 Castelo | Hard |
| 21.07.21 | 1st round | Nicolas Moreno De Alboran | Takuto Niki | 6-3, 6-2 | | match details | M25 Idanha | Hard |
| 15.07.21 | 2nd round | Zane Khan | Takuto Niki | 6-2, 6-3 | | match details | M25 Idanha | Hard |
| 13.07.21 | 1st round | Takuto Niki | Natan Rodrigues | 6-2, 6-2 | | match details | ||
| 08.07.21 | 2nd round | Diego Fernandez Flores | Takuto Niki | 6-75, 6-3, 6-4 | | match details | M15 Almada | Hard |
| 07.07.21 | 1st round | Takuto Niki | David Jorda Sanchis | 6-2, 6-2 | | match details | ||
| 09.06.21 | 1st round | Julian Cash | Takuto Niki | 6-1, 1-6, 6-3 | | match details |  M15 Heraklion | Hard |
| 02.06.21 | 1st round | Ze Zhang | Takuto Niki | 6-2, 6-3 | | match details | M15 Heraklion | Hard |
| 26.05.21 | 1st round | Federico Arnaboldi | Takuto Niki | 6-3, 6-4 | | match details | M15 Heraklion | Hard |
| 20.05.21 | 2nd round | Ze Zhang | Takuto Niki | 7-5, 6-3 | | match details | M15 Heraklion | Hard |
| 19.05.21 | 1st round | Takuto Niki | Mark Whitehouse | 6-3, 6-3 | | match details | ||
| 07.04.21 | 1st round | Vladimir Uzhylovsky | Takuto Niki | 7-65, 3-6, 6-4 | | match details |  M15 Sharm | Hard |
| 01.04.21 | 2nd round | Alessandro Bega | Takuto Niki | 6-3, 6-3 | | match details | M15 Sharm | Hard |
| 31.03.21 | 1st round | Takuto Niki | Faris Zakaryia | 6-2, 6-4 | | match details | ||
| 25.03.21 | 2nd round | Marek Gengel | Takuto Niki | 6-1, 6-0 | | match details | M15 Sharm | Hard |
| 24.03.21 | 1st round | Takuto Niki | Toby Martin | 6-2, 6-2 | | match details | ||
| 18.03.21 | 2nd round | Makoto Ochi | Takuto Niki | 6-3, 6-2 | | match details | M15 Sharm | Hard |
| 17.03.21 | 1st round | Takuto Niki | Filip Peliwo | 7-65, 6-2 | | match details | ||
| 10.03.21 | 1st round | Mukund Sasikumar | Takuto Niki | 6-1, 6-74, 7-64 | | match details | M15 Sharm | Hard |
| 03.03.21 | 1st round | Michail Pervolarakis | Takuto Niki | 7-64, 7-5 | | match details | M15 Sharm | Hard |
| 28.01.20 | 1st round | Liam Caruana | Takuto Niki | 7-5, 6-3 | | match details | Burnie Challenger | Hard |
| 27.01.20 | qual. | Takuto Niki | Harri Heliovaara | 6-4, 1-6, 7-63 | | match details | ||
| 21.10.19 | 1st round | Yunseong Chung | Takuto Niki | 6-2, 7-62 | | match details |  Liuzhou Challenger | Hard |
| 16.10.19 | 1st round | Ryohei Tagata | Takuto Niki | 7-5, 2-6, 6-4 | | match details | M15 Changwon | Hard |
| 21.09.19 | 1/2 | Rinky Hijikata | Takuto Niki | 6-1, 2-0, Takuto Niki - retired | | match details |  M15 Fayetteville | Hard |
| 20.09.19 | 1/4 | Takuto Niki | Oscar Mesquida Berg | 7-65, 3-6, 6-4 | | match details | ||
| 19.09.19 | 2nd round | Takuto Niki | Eduardo Nava | 7-5, 7-5 | | match details | ||
| 18.09.19 | 1st round | Takuto Niki | Ryan Goetz | 7-5, 6-4 | | match details | ||
| 11.09.19 | 1st round | Matheus Pucinelli De Almeida | Takuto Niki | 6-1, 7-5 | | match details | M15 Champaign | Hard |
| 05.09.19 | 2nd round | Yair Sarouk | Takuto Niki | 7-5, 6-3 | | match details |  M15 Sajur | Hard |
| 04.09.19 | 1st round | Takuto Niki | Ran Amar | 6-0, 6-3 | | match details | ||
| 30.08.19 | 1/4 | Riccardo Maiga | Takuto Niki | 7-64, 2-6, 6-3 | | match details | M15 Kiryat | Hard |
| 29.08.19 | 2nd round | Takuto Niki | Yair Sarouk | 7-5, 6-4 | | match details | ||
| 28.08.19 | 1st round | Takuto Niki | Markus Schultz | 4-6, 7-63, Markus Schultz - retired | | match details | ||
| 22.08.19 | 2nd round | Yankel Zemel | Takuto Niki | 3-6, 7-66, 7-64 | | match details | M15 Kiryat | Hard |
| 21.08.19 | 1st round | Takuto Niki | Roi Ginat | 7-64, 4-6, 6-4 | | match details | ||
| 29.06.19 | 1/2 | Yan Bai | Takuto Niki | 6-1, 7-5 | | match details | M25 Yinchuan | Hard |
| 28.06.19 | 1st round | Takuto Niki | Chien-Hsun Lo | 6-3, 4-6, 6-0 | | match details | ||
| 28.06.19 | 2nd round | Takuto Niki | Ivan Liutarevich | 7-67, 7-5 | | match details | ||
| 28.06.19 | 1/4 | Takuto Niki | Xin Gao | 6-2, 6-4 | | match details | ||
| 21.06.19 | 1/4 | Yuta Shimizu | Takuto Niki | 6-2, 7-66 | | match details | M15 Gimcheon | Hard |
| 20.06.19 | 2nd round | Takuto Niki | Seon Yong Han | 6-4, 6-2 | | match details | ||
| 19.06.19 | 1st round | Takuto Niki | Conor Berg | 6-4, 6-1 | | match details | ||
| 12.06.19 | 1st round | Young-Hoon Jeong | Takuto Niki | 6-4, 7-63 | | match details | M15 Gimcheon | Hard |
| 05.06.19 | 1st round | Young Seok Kim | Takuto Niki | 6-4, 6-3 | | match details | M15 Daegu | Hard |
| 30.05.19 | 2nd round | Kazuma Kawachi | Takuto Niki | 6-2, 2-1, Takuto Niki - retired | | match details |  M15 Singapore | Hard |
| 29.05.19 | 1st round | Takuto Niki | Jatin Dahiya | 6-1, 6-4 | | match details | ||
| 17.05.19 | 1/4 | Wishaya Trongcharoenchaikul | Takuto Niki | 7-63, 4-6, 7-65 | | match details | M25 Luan | Hard |
| 16.05.19 | 2nd round | Takuto Niki | Kento Takeuchi | 6-4, 6-74, 6-1 | | match details | ||
| 15.05.19 | 1st round | Takuto Niki | Ching-Mou Yu | 6-4, 3-6, 6-3 | | match details | ||
| 09.05.19 | 2nd round | Fajing Sun | Takuto Niki | 7-63, 6-3 | | match details | M25 Wuhan | Hard |
| 08.05.19 | 1st round | Takuto Niki | Ching-Mou Yu | 6-4, 6-73, 6-3 | | match details | ||
| 15.04.19 | fin | Shuichi Sekiguchi | Takuto Niki | 6-4, 6-4 | | match details | M25 Matsuyama | Hard |
| 13.04.19 | 1/2 | Takuto Niki | Wishaya Trongcharoenchaikul | 7-5, 6-3 | | match details | ||
| 12.04.19 | 2nd round | Takuto Niki | Yuki Mochizuki | 6-2, 6-3 | | match details | ||
| 12.04.19 | 1/4 | Takuto Niki | Gage Brymer | 6-4, 7-5 | | match details | ||
| 10.04.19 | 1st round | Takuto Niki | Sho Katayama | 6-2, 6-3 | | match details | ||
| 04.04.19 | 2nd round | Yunosuke Tanaka | Takuto Niki | 7-63, 1-6, 6-1 | | match details | M15 Kashiwa | Hard |
| 03.04.19 | 1st round | Takuto Niki | Shuichi Sekiguchi | 2-6, 6-3, 7-65 | | match details | ||
| 01.04.19 | qual. | Takuto Niki | Bart Stevens | 2-1, Bart Stevens - retired | | match details | ||
| 31.03.19 | q 1 | Takuto Niki | Sho Kawano | 6-2, 6-3 | | match details | ||
| 28.03.19 | 2nd round | Ryohei Tagata | Takuto Niki | 3-6, 6-2, 7-5 | | match details | M15 Tsukuba | Hard |
| 27.03.19 | 1st round | Takuto Niki | Takashi Saito | 6-4, 6-2 | | match details | ||
| 23.03.19 | 1/2 | Sho Shimabukuro | Takuto Niki | 7-5, 6-3 | | match details | M15 Kofu | Hard |
| 22.03.19 | 1/4 | Takuto Niki | Hiroyasu Ehara | 6-3, 6-4 | | match details | ||
| 21.03.19 | 2nd round | Takuto Niki | Sho Katayama | 4-6, 7-62, 6-4 | | match details | ||
| 20.03.19 | 1st round | Takuto Niki | Hong Kit Wong | 3-6, 6-4, 6-2 | | match details | ||
| 16.03.19 | 1/2 | Shuichi Sekiguchi | Takuto Niki | 6-4, 6-76, 6-3 | | match details | M15 Nishi | Hard |
| 15.03.19 | 1/4 | Takuto Niki | Yuta Shimizu | 7-65, 1-6, 6-3 | | match details | ||
| 14.03.19 | 2nd round | Takuto Niki | Makoto Ochi | 6-3, 3-6, 6-1 | | match details | ||
| 13.03.19 | 1st round | Takuto Niki | Jie Cui | 6-4, 7-64 | | match details | ||
| 06.03.19 | 1st round | Ji Sung Nam | Takuto Niki | 6-4, 6-2 | | match details | M15 Nishi | Hard |
| 30.09.18 | fin | Takuto Niki | Michael Shabaz | 6-3, 3-6, 6-3 | | match details | USA F26 | Hard |
| 29.09.18 | 1/2 | Takuto Niki | Strong Kirchheimer | 3-6, 6-1, 6-3 | | match details | ||
| 28.09.18 | 1/4 | Takuto Niki | Alan Kohen | 7-60, 6-4 | | match details | ||
| 27.09.18 | 2nd round | Takuto Niki | Emilio Nava | 6-4, 7-67 | | match details | ||
| 26.09.18 | 1st round | Takuto Niki | Siem Woldeab | 6-2, 6-2 | | match details | ||
| 20.09.18 | 2nd round | Emilio Nava | Takuto Niki | 6-3, 6-1 | | match details | USA F25 | Hard |
| 19.09.18 | 1st round | Takuto Niki | Zachary Svajda | 6-4, 6-2 | | match details | ||
| 13.09.18 | 1/4 | Michail Pervolarakis | Takuto Niki | 6-3, 7-63 | | match details |  Canada F7 | Hard |
| 12.09.18 | 2nd round | Takuto Niki | Maxime Cressy | 7-67, 6-1 | | match details | ||
| 11.09.18 | 1st round | Takuto Niki | Alexander Knight | 6-4, 7-65 | | match details | ||
| 23.06.18 | 1/2 | Ji Sung Nam | Takuto Niki | 6-3, 4-6, 6-1 | | match details | Korea F3 | Hard |
| 22.06.18 | 1/4 | Takuto Niki | Jae Hwan Kim | 6-3, 6-4 | | match details | ||
| 19.06.18 | 2nd round | Takuto Niki | Ching-Mou Yu | 6-4, 6-3 | | match details | ||
| 19.06.18 | 1st round | Takuto Niki | Soichiro Moritani | 6-0, 6-0 | | match details | ||
| 14.06.18 | 2nd round | Ji Hoon Son | Takuto Niki | 7-65, 7-5 | | match details | Korea F2 | Hard |
| 13.06.18 | 1st round | Takuto Niki | Min-Kyu Song | 3-6, 7-5, 6-3 | | match details | ||
| 09.06.18 | 1/2 | Jea Moon Lee | Takuto Niki | 6-3, 4-6, 6-4 | | match details | Korea F1 | Hard |
| 07.06.18 | 1/4 | Takuto Niki | Hong Chung | 6-1, 6-0 | | match details | ||
| 07.06.18 | 2nd round | Takuto Niki | Sang-Woo Noh | 6-3, 6-2 | | match details | ||
| 05.06.18 | 1st round | Takuto Niki | Sang-Yuop Kim | 6-0, 6-0 | | match details | ||
| 29.05.18 | 1st round | Congsup Congcar | Takuto Niki | 7-5, 6-1 | | match details | Singapore F3 | Hard |
| 26.05.18 | fin | Collin Altamirano | Takuto Niki | 7-65, 6-3 | | match details | Singapore F2 | Hard |
| 25.05.18 | 1/2 | Takuto Niki | Thai Kwiatkowski | 7-63, 2-1, Thai Kwiatkowski - retired | | match details | ||
| 24.05.18 | 1/4 | Takuto Niki | Daniel Nolan | 1-6, 7-66, 6-4 | | match details | ||
| 23.05.18 | 2nd round | Takuto Niki | Nicholas S. Hu | 6-4, 6-4 | | match details | ||
| 22.05.18 | 1st round | Takuto Niki | James Frawley | 2-6, 6-4, 6-1 | | match details | ||
| 29.04.18 | q 2 | Wishaya Trongcharoenchaikul | Takuto Niki | Takuto Niki - walk over | | match details | Seoul Challenger | Hard |
| 28.04.18 | q 1 | Takuto Niki | Hogi Kang | 7-61, 2-6, 6-0 | | match details | ||
| 10.04.18 | 1st round | Makoto Ochi | Takuto Niki | 7-5, 6-3 | | match details | Japan F6 | Hard |
| 03.04.18 | 2nd round | Hiroyasu Ehara | Takuto Niki | 6-2, 2-6, 6-4 | | match details | Japan F5 | Hard |
| 02.04.18 | 1st round | Takuto Niki | Yuta Shimizu | 6-2, 6-4 | | match details | ||
| 27.03.18 | 1st round | Naoki Tajima | Takuto Niki | 7-5, 7-64 | | match details | Japan F4 | Hard |
| 19.03.18 | 1st round | Shinji Hazawa | Takuto Niki | 7-5, 6-3 | | match details | Japan F3 | Hard |
| 12.03.18 | 1st round | Kaito Uesugi | Takuto Niki | 6-0, 6-3 | | match details | Japan F2 | Hard |
| 09.03.18 | 1/2 | Daniel Nguyen | Takuto Niki | 6-3, 6-4 | | match details | Japan F1 | Hard |
| 08.03.18 | 2nd round | Takuto Niki | Yuuya Kibi | 6-3, 7-5 | | match details | ||
| 08.03.18 | 1/4 | Takuto Niki | Soichiro Moritani | 6-1, 6-4 | | match details | ||
| 07.03.18 | 1st round | Takuto Niki | Naoya Maesaki | 6-2, 6-73, 6-2 | | match details | ||
| 24.02.18 | q 1 | Takuto Niki | N.Sriram Balaji | 3-6, 7-62, 7-5 | | match details | Yokohama Challenger | Hard |
| 24.02.18 | q 2 | Yunseong Chung | Takuto Niki | 6-76, 6-3, 6-3 | | match details | ||
| 27.01.18 | q 2 | N. Vijay Sundar Prashanth | Takuto Niki | 6-4, 6-3 | | match details | Burnie Challenger | Hard |
| 27.01.18 | q 1 | Takuto Niki | Thomas Bosancic | 6-3, 6-2 | | match details | ||
| 04.01.18 | 1/4 | Matteo Viola | Takuto Niki | 6-1, 6-3 | | match details |  Hong Kong | Hard |
| 03.01.18 | 2nd round | Takuto Niki | Lingxi Zhao | 6-1, 6-1 | | match details | ||
| 02.01.18 | 1st round | Takuto Niki | Skyler Butts | 6-1, 6-0 | | match details | ||
| 27.12.17 | 2nd round | Alexander Zhurbin | Takuto Niki | 6-4, 7-64 | | match details | Hong Kong | Hard |
| 26.12.17 | 1st round | Takuto Niki | Evan King | 6-4, 6-2 | | match details | ||
| 18.11.17 | q 1 | Edward Bourchier | Takuto Niki | 6-3, 6-4 | | match details | Hua Hin | Hard |
| 23.09.17 | q 1 | Marcos Giron | Takuto Niki | 6-2, 7-5 | | match details | Chengdu | Hard |
| 19.09.17 | 1st round | Soon-Woo Kwon | Takuto Niki | 6-4, 6-1 | | match details | Gwangju Challenger | Hard |
| 12.09.17 | 1st round | Zihao Xia | Takuto Niki | 2-6, 7-66, 6-1 | | match details | Shanghai Challenger | Hard |
| 06.09.17 | 1st round | Yusuke Takahashi | Takuto Niki | 7-5, 6-1 | | match details | Zhangjiagang Challenger | Hard |
| 07.08.17 | 1st round | Dayne Kelly | Takuto Niki | 6-2, 6-3 | | match details | Jinan Challenger | Hard |
| 31.07.17 | 1st round | Yibing Wu | Takuto Niki | 6-3, 6-4 | | match details | Chengdu Challenger | Hard |
| 12.07.17 | 2nd round | Tung-Lin Wu | Takuto Niki | 6-2, 6-1 | | match details | China F12 | Hard |
| 11.07.17 | 1st round | Takuto Niki | Hao Wu | 7-63, 6-2 | | match details | ||
| 06.07.17 | 1/4 | Jacob Grills | Takuto Niki | 6-3, 5-7, 6-3 | | match details | Hong Kong | Hard |
| 05.07.17 | 2nd round | Takuto Niki | Haru Inoue | 6-4, 1-6, 6-1 | | match details | ||
| 03.07.17 | 1st round | Takuto Niki | Siu Chuen Lam | 6-1, 6-0 | | match details | ||
| 27.06.17 | 1st round | Jacob Grills | Takuto Niki | 6-1, 7-62 | | match details | Hong Kong | Hard |
| 23.06.17 | 1/4 | Yosuke Watanuki | Takuto Niki | 6-4, 6-4 | | match details | .png){kind=small} Chinese Taipei | Hard |
| 22.06.17 | 2nd round | Takuto Niki | Wei-De Lin | 6-2, 7-64 | | match details | ||
| 21.06.17 | 1st round | Takuto Niki | Fei Ti Liao | 6-2, 6-74, 6-4 | | match details | ||
| 15.06.17 | 2nd round | Yosuke Watanuki | Takuto Niki | 6-2, 6-3 | | match details | Chinese Taipei | Hard |
| 14.06.17 | 1st round | Takuto Niki | Shintaro Imai | 6-4, 6-4 | | match details | ||
| 08.06.17 | 1/4 | Kento Takeuchi | Takuto Niki | 6-4, 2-6, 6-4 | | match details | Japan F7 | Hard |
| 07.06.17 | 2nd round | Takuto Niki | Sho Katayama | Sho Katayama - walk over | | match details | ||
| 06.06.17 | 1st round | Takuto Niki | Yusuke Watanuki | 5-7, 7-5, 6-4 | | match details | ||
| 26.05.17 | 1/4 | Jose Statham | Takuto Niki | 7-63, 7-65 | | match details | China F8 | Hard |
| 25.05.17 | 2nd round | Takuto Niki | Chuhan Wang | 6-3, 6-1 | | match details | ||
| 23.05.17 | 1st round | Takuto Niki | Naoki Nakagawa | 6-3, 6-2 | | match details | ||
| 15.05.17 | qual. | Edward Corrie | Takuto Niki | 6-4, 4-6, 6-4 | | match details | Busan Challenger | Hard |
| 14.05.17 | q 2 | Takuto Niki | Seong-Gook Oh | 6-4, 6-3 | | match details | ||
| 06.05.17 | q 1 | Daniel Nguyen | Takuto Niki | 2-6, 6-1, 6-2 | | match details | Seoul Challenger | Hard |
| 01.05.17 | qual. | Hubert Hurkacz | Takuto Niki | 6-3, 6-4 | | match details | Gimcheon Challenger | Hard |
| 30.04.17 | q 2 | Takuto Niki | Ki Su Jung | 6-1, 6-2 | | match details | ||
| 29.04.17 | q 1 | Takuto Niki | Hiroyasu Ehara | 6-1, 6-4 | | match details | ||
| 07.04.17 | 1/4 | Masato Shiga | Takuto Niki | 6-2, 0-6, 6-4 | | match details | Japan F5 | Hard |
| 05.04.17 | 2nd round | Takuto Niki | Chan-Yeong Oh | 6-4, 3-6, 6-2 | | match details | ||
| 03.04.17 | 1st round | Takuto Niki | Yuichi Ito | 6-3, 6-4 | | match details | ||
| 01.04.17 | fin | Yusuke Takahashi | Takuto Niki | 6-2, 6-2 | | match details | Japan F4 | Hard |
| 31.03.17 | 1/4 | Takuto Niki | Renta Tokuda | 6-2, 6-75, 7-5 | | match details | ||
| 31.03.17 | 1/2 | Takuto Niki | Kaito Uesugi | 6-3, 6-3 | | match details | ||
| 30.03.17 | 2nd round | Takuto Niki | Sho Shimabukuro | 6-74, 6-3, 7-65 | | match details | ||
| 29.03.17 | 1st round | Takuto Niki | Shunrou Takeshima | 6-2, 7-5 | | match details | ||
| 24.03.17 | 1/2 | Takuto Niki | Nam Hoang Ly | 4-6, 6-4, 6-0 | | match details | Japan F3 | Hard |
| 24.03.17 | fin | Takuto Niki | Shane Vinsant | 6-4, 4-0, Shane Vinsant - retired | | match details | ||
| 22.03.17 | 2nd round | Takuto Niki | Hong Chung | 6-3, 7-5 | | match details | ||
| 22.03.17 | 1/4 | Takuto Niki | Wishaya Trongcharoenchaikul | 6-75, 6-1, 6-4 | | match details | ||
| 21.03.17 | 1st round | Takuto Niki | Yuta Shimizu | 6-1, 3-6, 6-1 | | match details | ||
| 16.03.17 | 2nd round | Sho Katayama | Takuto Niki | 3-6, 7-63, 6-4 | | match details | Japan F2 | Hard |
| 14.03.17 | 1st round | Takuto Niki | Yunosuke Tanaka | 6-4, 6-4 | | match details | ||
| 11.03.17 | fin | Yusuke Takahashi | Takuto Niki | 7-5, 6-3 | | match details | Japan F1 | Hard |
| 11.03.17 | 1/2 | Takuto Niki | Hiroyasu Ehara | 6-2, 6-1 | | match details | ||
| 09.03.17 | 1/4 | Takuto Niki | Kaito Itsusaki | 6-2, 6-4 | | match details | ||
| 08.03.17 | 2nd round | Takuto Niki | Gengo Kikuchi | 6-0, 6-4 | | match details | ||
| 08.03.17 | 1st round | Takuto Niki | Shinta Fujii | 7-62, 6-2 | | match details | ||
| 28.02.17 | 2nd round | Andrew Whittington | Takuto Niki | 6-4, 7-65 | | match details | Yokohama Challenger | Hard |
| 27.02.17 | 1st round | Takuto Niki | Masato Shiga | 6-1, 6-1 | | match details | ||
| 26.02.17 | qual. | Takuto Niki | Alex Bolt | 6-2, 6-4 | | match details | ||
| 25.02.17 | q 2 | Takuto Niki | Hiroyasu Ehara | 6-78, 6-1, 6-3 | | match details | ||
| 24.02.17 | q 1 | Takuto Niki | Axel Michon | 6-2, 2-6, 7-5 | | match details | ||
| 31.01.17 | 1st round | Maverick Banes | Takuto Niki | 6-3, 4-6, 6-2 | | match details | Burnie Challenger | Hard |
| 07.01.17 | fin | Yan Bai | Takuto Niki | 6-1, 6-4 | | match details | Hong Kong | Hard |
| 06.01.17 | 1/2 | Takuto Niki | Geoffrey Blancaneaux | 6-4, 6-3 | | match details | ||
| 05.01.17 | 1/4 | Takuto Niki | Ken Onishi | 6-4, 6-1 | | match details | ||
| 04.01.17 | 2nd round | Takuto Niki | Hei Yin Andrew Li | 6-1, 6-3 | | match details | ||
| 03.01.17 | 1st round | Takuto Niki | Daisuke Sumizawa | 6-1, 6-0 | | match details | ||
| 28.12.16 | 2nd round | Sora Fukuda | Takuto Niki | 6-4, 7-63 | | match details | Hong Kong | Hard |
| 27.12.16 | 1st round | Takuto Niki | Chung Han Tsai | 6-2, 6-3 | | match details | ||
| 22.10.16 | 1/2 | Takuto Niki | Kuan-Yi Lee | 2-6, 6-4, 6-2 | | match details | Chinese Taipei | Hard |
| 22.10.16 | fin | Takuto Niki | Jumpei Yamasaki | 4-6, 7-5, 6-3 | | match details | ||
| 21.10.16 | 1/4 | Takuto Niki | Ryota Tanuma | 6-4, 7-5 | | match details | ||
| 20.10.16 | 2nd round | Takuto Niki | Eero Vasa | 6-3, 6-3 | | match details | ||
| 19.10.16 | 1st round | Takuto Niki | Wishaya Trongcharoenchaikul | 7-5, 7-63 | | match details | ||
| 15.10.16 | fin | Takuto Niki | Kuan-Yi Lee | 6-4, 6-4 | | match details | Chinese Taipei | Hard |
| 15.10.16 | 1/2 | Takuto Niki | Ti Chen | 6-4, 6-0 | | match details | ||
| 14.10.16 | 1/4 | Takuto Niki | Cing-Yang Meng | 6-2, 6-3 | | match details | ||
| 13.10.16 | 2nd round | Takuto Niki | Rio Noguchi | 6-3, 7-64 | | match details | ||
| 12.10.16 | 1st round | Takuto Niki | Jeson Patrombon | 6-2, 6-3 | | match details | ||
| 24.09.16 | q 1 | Radek Stepanek | Takuto Niki | 7-64, 6-2 | | match details | Chengdu | Hard |
| 22.09.16 | 2nd round | Duckhee Lee | Takuto Niki | 6-4, 6-3 | | match details | Kaohsiung Challenger | Hard |
| 21.09.16 | 1st round | Takuto Niki | Jozef Kovalik | 1-6, 6-2, 6-1 | | match details | ||
| 18.09.16 | qual. | Takuto Niki | Soon-Woo Kwon | 6-4, 6-1 | | match details | ||
| 17.09.16 | q 1 | Takuto Niki | Cheng-Peng Hsieh | 6-4, 6-2 | | match details | ||
| 10.09.16 | q 2 | Zihao Xia | Takuto Niki | 4-6, 6-4, 6-1 | | match details | Nanchang Challenger | Hard |
| 05.09.16 | qual. | Matija Pecotic | Takuto Niki | 6-1, 6-4 | | match details | Shanghai Challenger | Hard |
| 04.09.16 | q 2 | Takuto Niki | Hao Wu | 6-1, 6-1 | | match details | ||
| 29.08.16 | 1st round | Yuuya Kibi | Takuto Niki | 4-6, 6-3, 6-2 | | match details | Bangkok Challenger | Hard |
| 12.08.16 | 1/4 | Jonathan Kanar | Takuto Niki | 6-75, 6-4, 7-67 | | match details |  Vietnam F3 | Hard |
| 11.08.16 | 2nd round | Takuto Niki | Shane Vinsant | 6-4, 6-1 | | match details | ||
| 09.08.16 | 1st round | Takuto Niki | Hyun-Woo Nam | 6-4, 6-1 | | match details | ||
| 05.08.16 | 1/4 | Jason Jung | Takuto Niki | 6-4, 6-2 | | match details | Chengdu Challenger | Hard |
| 03.08.16 | 2nd round | Takuto Niki | Enrique Lopez-Perez | 3-6, 6-4, 6-1 | | match details | ||
| 01.08.16 | 1st round | Takuto Niki | Prajnesh Gunneswaran | 3-6, 6-3, 6-2 | | match details | ||
| 31.07.16 | qual. | Takuto Niki | Xin Gao | 6-0, 6-3 | | match details | ||
| 30.07.16 | q 1 | Takuto Niki | Wu Xian | 6-0, 6-0 | | match details | ||
| 22.07.16 | 1/4 | Andrew Whittington | Takuto Niki | 4-6, 7-63, 7-5 | | match details | Gimcheon Challenger | Hard |
| 21.07.16 | 2nd round | Takuto Niki | Ze Zhang | 6-4, 6-2 | | match details | ||
| 19.07.16 | 1st round | Takuto Niki | Hyun-Woo Nam | 6-4, 6-0 | | match details | ||
| 14.07.16 | 1/4 | Soon-Woo Kwon | Takuto Niki | 5-7, 6-4, 7-62 | | match details | Korea F5 | Hard |
| 13.07.16 | 2nd round | Takuto Niki | Hiroyasu Ehara | 6-4, 6-2 | | match details | ||
| 12.07.16 | 1st round | Takuto Niki | Jae Hwan Kim | 6-75, 6-1, 6-4 | | match details | ||
| 04.07.16 | 1st round | Max Purcell | Takuto Niki | 6-1, 6-2 | | match details | Korea F4 | Hard |
| 07.06.16 | 1st round | Keisuke Watanuki | Takuto Niki | 6-4, 7-66 | | match details | Japan F7 | Hard |
| 27.05.16 | 1/4 | Andrew Whittington | Takuto Niki | 4-6, 6-4, 6-4 | | match details | Guam F1 | Hard |
| 25.05.16 | 2nd round | Takuto Niki | Ju-Hae Moon | 6-2, 6-75, 4-0, Ju-Hae Moon - retired | | match details | ||
| 24.05.16 | 1st round | Takuto Niki | Mark Oljaca | 6-4, 6-0 | | match details | ||
| 08.04.16 | 1/4 | Sho Katayama | Takuto Niki | 6-75, 6-2, 6-3 | | match details | Japan F5 | Hard |
| 07.04.16 | 2nd round | Takuto Niki | Takao Suzuki | 6-3, Takao Suzuki - retired | | match details | ||
| 06.04.16 | 1st round | Takuto Niki | Ko Suzuki | 6-4, 3-6, 6-2 | | match details | ||
| 30.03.16 | 1st round | Ryota Tanuma | Takuto Niki | 6-4, 7-5 | | match details | Japan F4 | Hard |
| 21.03.16 | 1st round | Xin Gao | Takuto Niki | 2-6, 6-2, 6-2 | | match details | Japan F3 | Hard |
| 15.03.16 | 1st round | Yunseong Chung | Takuto Niki | 6-3, 3-6, 6-3 | | match details | Japan F2 | Hard |
| 11.03.16 | 1/4 | Gengo Kikuchi | Takuto Niki | 7-60, 4-6, 6-3 | | match details | Japan F1 | Hard |
| 10.03.16 | 2nd round | Takuto Niki | Yecong He | 6-2, 6-1 | | match details | ||
| 09.03.16 | 1st round | Takuto Niki | Keisuke Watanuki | 7-5, 6-2 | | match details | ||
| 16.02.16 | 1st round | Dmitry Popko | Takuto Niki | 7-64, 3-6, 6-3 | | match details |  New Delhi | Hard |
| 03.02.16 | 2nd round | Andrey Golubev | Takuto Niki | 6-1, 6-3 | | match details | Launceston Challenger | Hard |
| 01.02.16 | 1st round | Takuto Niki | Dayne Kelly | 7-65, 6-1 | | match details | ||
| 19.10.15 | 1st round | Yecong He | Takuto Niki | 6-4, 6-3 | | match details | Ningboo Challenger | Hard |
| 17.10.15 | qual. | Takuto Niki | Xirui Liu | 6-0, 6-0 | | match details | ||
| 03.10.15 | q 1 | Go Soeda | Takuto Niki | 6-3, 7-63 | | match details | Tokyo | Hard |
| 29.09.15 | 1st round | Yan Bai | Takuto Niki | 6-1, 7-5 | | match details | Shenzhen | Hard |
| 28.09.15 | qual. | Takuto Niki | Fajing Sun | 6-1, 6-4 | | match details | ||
| 27.09.15 | q 2 | Takuto Niki | Mikhail Elgin | 6-4, 7-5 | | match details | ||
| 26.09.15 | q 1 | Takuto Niki | Long Chen | 4-6, 6-2, 6-1 | | match details | ||
| 23.09.15 | 2nd round | Hyeon Chung | Takuto Niki | 6-2, 6-4 | | match details | Kaohsiung Challenger | Hard |
| 22.09.15 | 1st round | Takuto Niki | Jui-Chen Hung | 6-2, 6-2 | | match details | ||
| 14.09.15 | 1st round | Tsung-Hua Yang | Takuto Niki | 6-4, 4-6, 6-3 | | match details | Nanchang Challenger | Hard |
| 06.09.15 | q 2 | Finn Tearney | Takuto Niki | 7-5, 6-4 | | match details | Shanghai Challenger | Hard |
| 05.09.15 | q 1 | Takuto Niki | Zhicheng Zhu | 6-2, 3-2, Zhicheng Zhu - retired | | match details | ||
| 02.09.15 | 1st round | Shuichi Sekiguchi | Takuto Niki | 6-2, 7-5 | | match details | Bangkok Challenger | Hard |
| 15.08.15 | q 1 | Maxime Hamou | Takuto Niki | 6-72, 6-4, 6-1 | | match details | Vancouver Challenger | Hard |
| 11.08.15 | 1st round | Kyle Edmund | Takuto Niki | 6-1, 6-2 | | match details | Aptos Challenger | Hard |
| 10.08.15 | qual. | Tennys Sandgren | Takuto Niki | 6-3, 7-5 | | match details | ||
| 09.08.15 | q 2 | Takuto Niki | Eric James Johnson | 3-6, 6-4, 6-2 | | match details | ||
| 08.08.15 | q 1 | Takuto Niki | John Lamble | 6-3, 6-2 | | match details | ||
| 02.08.15 | qual. | Marinko Matosevic | Takuto Niki | 6-2, 6-4 | | match details | Washington | Hard |
| 01.08.15 | q 1 | Takuto Niki | Sekou Bangoura | 6-3, 6-74, 7-67 | | match details | ||
| 26.07.15 | q 2 | Alex Kuznetsov | Takuto Niki | 6-3, 7-64 | | match details | Lexington Challenger | Hard |
| 25.07.15 | q 1 | Takuto Niki | Beck Pennington | 6-1, 6-2 | | match details | ||
| 21.07.15 | 1st round | Jared Donaldson | Takuto Niki | 6-3, 6-2 | | match details | Binghamton Challenger | Hard |
| 16.06.15 | 1st round | Denys Molchanov | Takuto Niki | 6-4, 6-2 | | match details |  Fergana Challenger | Hard |
| 08.06.15 | 1st round | Takuto Niki | Yusuke Yoshikawa | 6-3, 6-2 | | match details | Japan F6 | Hard |
| 08.06.15 | 2nd round | Takuto Niki | Keisuke Watanuki | 6-76, 7-61, 6-4 | | match details | ||
| 08.06.15 | 1/2 | Toshihide Matsui | Takuto Niki | 6-3, 6-2 | | match details | ||
| 08.06.15 | 1/4 | Takuto Niki | Masaki Sasai | 6-2, 6-1 | | match details | ||
| 04.06.15 | 2nd round | Christopher O'Connell | Takuto Niki | 2-6, 6-3, 6-1 | | match details | Gimcheon Challenger | Hard |
| 03.06.15 | 1st round | Takuto Niki | Duckhee Lee | 6-2, 6-3 | | match details | ||
| 25.05.15 | 1st round | Takuto Niki | Xiao Gong | 6-2, 6-2 | | match details | China F6 | Hard |
| 25.05.15 | 2nd round | Xin Gao | Takuto Niki | 6-2, 7-64 | | match details | ||
| 13.05.15 | 2nd round | Go Soeda | Takuto Niki | 6-1, 6-73, 6-3 | | match details | Seoul Challenger | Hard |
| 11.05.15 | 1st round | Takuto Niki | Alex Bolt | 5-7, 6-4, 7-65 | | match details | ||
| 05.05.15 | 1st round | Ji Sung Nam | Takuto Niki | 6-1, 6-4 | | match details | Busan Challenger | Hard |
| 30.03.15 | 2nd round | Takuto Niki | Yuichi Ito | 6-1, 6-4 | | match details | Japan F4 | Hard |
| 30.03.15 | 1/4 | Takuto Niki | Yong-Kyu Lim | 6-2, 6-2 | | match details | ||
| 30.03.15 | 1/2 | Takuto Niki | Zhe Li | 6-2, 6-2 | | match details | ||
| 30.03.15 | fin | Yasutaka Uchiyama | Takuto Niki | 6-1, 6-2 | | match details | ||
| 30.03.15 | 1st round | Takuto Niki | Takashi Saito | 7-5, 5-7, 6-3 | | match details | ||
| 23.03.15 | 1st round | Takuto Niki | Jea Moon Lee | 6-1, 6-1 | | match details | Japan F3 | Hard |
| 23.03.15 | 1/4 | Yong-Kyu Lim | Takuto Niki | 7-65, 7-5 | | match details | ||
| 23.03.15 | 2nd round | Takuto Niki | Hiroyasu Ehara | 4-6, 6-3, 6-3 | | match details | ||
| 16.03.15 | fin | Takuto Niki | Shintaro Imai | 6-74, 6-4, 6-2 | | match details | Japan F2 | Hard |
| 16.03.15 | 2nd round | Takuto Niki | Tadayuki Longhi | 6-3, 6-2 | | match details | ||
| 16.03.15 | 1/4 | Takuto Niki | Masaki Sasai | 7-5, 6-3 | | match details | ||
| 16.03.15 | 1/2 | Takuto Niki | Hiroyasu Ehara | 6-3, 6-72, 6-2 | | match details | ||
| 16.03.15 | 1st round | Takuto Niki | Luca Pancaldi | 7-63, 6-4 | | match details | ||
| 09.03.15 | 1/2 | Takuto Niki | Yuichi Ito | 7-65, 6-3 | | match details | Japan F1 | Hard |
| 09.03.15 | 1st round | Takuto Niki | Shintaro Imai | 5-7, 7-64, 6-4 | | match details | ||
| 09.03.15 | fin | Takuto Niki | Yuuya Kibi | 6-3, Yuuya Kibi - retired | | match details | ||
| 09.03.15 | 2nd round | Takuto Niki | Masaki Sasai | 6-2, 6-1 | | match details | ||
| 09.03.15 | 1/4 | Takuto Niki | Jarryd Chaplin | 7-66, 6-3 | | match details | ||
| 03.02.15 | 1st round | Bjorn Fratangelo | Takuto Niki | 6-4, 1-6, 7-611 | | match details | Burnie Challenger | Hard |
| 29.01.15 | 2nd round | Nicolas Meister | Takuto Niki | 7-60, 6-1 | | match details | Maui Challenger | Hard |
| 28.01.15 | 1st round | Takuto Niki | Denys Molchanov | 6-3, 6-72, 6-2 | | match details | ||
| 24.11.14 | 2nd round | Dekel Bar | Takuto Niki | 6-3, 6-4 | | match details |  Cambodia F2 | Hard |
| 24.11.14 | 1st round | Takuto Niki | Phalkun Mam | 6-1, 6-0 | | match details | ||
| 10.11.14 | 1st round | Hiroki Moriya | Takuto Niki | 6-2, 6-1 | | match details | Yokohama Challenger | Hard |
| 29.10.14 | 2nd round | Luke Saville | Takuto Niki | 6-1, 6-3 | | match details | Traralgon Challenger | Hard |
| 28.10.14 | 1st round | Takuto Niki | Tsung-Hua Yang | 6-0, 7-5 | | match details | ||
| 13.10.14 | 2nd round | Christopher O'Connell | Takuto Niki | 6-2, 6-3 | | match details | Australia F8 | Hard |
| 13.10.14 | 1st round | Takuto Niki | Leon Frost | 6-1, 6-2 | | match details | ||
| 06.10.14 | 1/4 | Christopher O'Connell | Takuto Niki | 7-65, 6-4 | | match details | Australia F7 | Hard |
| 06.10.14 | 1st round | Takuto Niki | Mitchell Harper | 6-2, 6-2 | | match details | ||
| 06.10.14 | 2nd round | Takuto Niki | Scott Puodziunas | 6-4, 6-2 | | match details | ||
| 29.09.14 | 1/4 | Dane Propoggia | Takuto Niki | 6-4, 6-2 | | match details | Australia F6 | Hard |
| 29.09.14 | 2nd round | Takuto Niki | Jay Andrijic | 3-6, 6-3, 7-5 | | match details | ||
| 29.09.14 | 1st round | Takuto Niki | Darren K. Polkinghorne | 6-4, 7-64 | | match details | ||
| 04.09.14 | 2nd round | Somdev Devvarman | Takuto Niki | 6-74, 6-2, 6-3 | | match details | Shanghai Challenger | Hard |
| 03.09.14 | 1st round | Takuto Niki | Kento Takeuchi | 6-2, 6-3 | | match details | ||
| 25.08.14 | 1/4 | Takuto Niki | Kento Takeuchi | 6-3, 6-2 | | match details | Chinese Taipei | Hard |
| 25.08.14 | 1/2 | N.Sriram Balaji | Takuto Niki | 4-6, 6-4, 7-62 | | match details | ||
| 25.08.14 | 1st round | Takuto Niki | Ting Yu Chuang | 7-65, 6-2 | | match details | ||
| 25.08.14 | 2nd round | Takuto Niki | Chu-Huan Yi | 6-2, 3-6, 6-3 | | match details | ||
| 18.08.14 | 1/4 | Ti Chen | Takuto Niki | 6-3, 6-4 | | match details | Chinese Taipei | Hard |
| 18.08.14 | 2nd round | Takuto Niki | Masato Shiga | 6-1, 6-0 | | match details | ||
| 18.08.14 | 1st round | Takuto Niki | Ko Suzuki | 6-4, 6-0 | | match details | ||
| 21.07.14 | 1st round | Takuto Niki | Sheng Hao Zhou | 6-2, 6-1 | | match details | China F9 | Hard |
| 21.07.14 | 2nd round | Takuto Niki | Rigele Te | 6-4, 6-2 | | match details | ||
| 21.07.14 | 1/4 | Ji Sung Nam | Takuto Niki | 7-5, 6-4 | | match details | ||
| 16.07.14 | 2nd round | Alexander Kudryavtsev | Takuto Niki | 4-6, 7-66, 6-2 | | match details | Kaohsiung Challenger | Hard |
| 15.07.14 | 1st round | Takuto Niki | Ivo Klec | 2-6, 7-67, 6-4 | | match details | ||
| 09.06.14 | 1/2 | Takashi Saito | Takuto Niki | 7-65, 6-3 | | match details | Japan F6 | Hard |
| 09.06.14 | 2nd round | Takuto Niki | Atsushi Ushida | 6-4, 6-1 | | match details | ||
| 09.06.14 | 1/4 | Takuto Niki | Takao Suzuki | 6-1, Takao Suzuki - retired | | match details | ||
| 09.06.14 | 1st round | Takuto Niki | Kazuma Kawachi | 6-2, 7-5 | | match details | ||
| 26.05.14 | 1/2 | Takuto Niki | Bumpei Sato | 6-2, 7-5 | | match details | Guam F1 | Hard |
| 26.05.14 | 1st round | Takuto Niki | Hiroshi Yano | 6-2, 6-0 | | match details | ||
| 26.05.14 | 2nd round | Takuto Niki | Atsushi Ushida | 4-6, 6-2, 6-2 | | match details | ||
| 26.05.14 | fin | Takuto Niki | Jeevan Nedunchezhiyan | 6-76, 6-2, 7-5 | | match details | ||
| 26.05.14 | 1/4 | Takuto Niki | Woong-Sun Jun | 6-4, 7-62 | | match details | ||
| 28.04.14 | 1/4 | Takuto Niki | Hyung-Taik Lee | Hyung-Taik Lee - walk over | | match details | Korea F2 | Hard |
| 28.04.14 | 1st round | Takuto Niki | Oscar Fabian Matthews | 6-1, 6-4 | | match details | ||
| 28.04.14 | 2nd round | Takuto Niki | Henrique Cunha | 7-64, 6-2 | | match details | ||
| 28.04.14 | 1/2 | Min-Hyoek Cho | Takuto Niki | 6-2, 6-4 | | match details | ||
| 21.04.14 | 2nd round | Takuto Niki | Henrique Cunha | 6-4, 6-4 | | match details | Korea F1 | Hard |
| 21.04.14 | 1/4 | Yong-Kyu Lim | Takuto Niki | 6-4, 6-3 | | match details | ||
| 21.04.14 | 1st round | Takuto Niki | Woong-Sun Jun | 6-1, 6-4 | | match details | ||
| 31.03.14 | 1/4 | Takuto Niki | Junya Toyono | 6-0, 7-63 | | match details | Japan F4 | Hard |
| 31.03.14 | fin | Masato Shiga | Takuto Niki | 3-6, 7-64, 6-3 | | match details | ||
| 31.03.14 | 1/2 | Takuto Niki | Duckhee Lee | 6-3, 6-3 | | match details | ||
| 31.03.14 | 1st round | Takuto Niki | Soichiro Moritani | 6-2, 6-1 | | match details | ||
| 31.03.14 | 2nd round | Takuto Niki | Yusuke Watanuki | 6-2, 3-2, Yusuke Watanuki - retired | | match details | ||
| 24.03.14 | fin | Takuto Niki | Yusuke Watanuki | 6-4, 6-2 | | match details | Japan F3 | Hard |
| 24.03.14 | 2nd round | Takuto Niki | Shintaro Imai | 7-5, 6-2 | | match details | ||
| 24.03.14 | 1/4 | Takuto Niki | Kento Takeuchi | 6-4, 6-0 | | match details | ||
| 24.03.14 | 1/2 | Takuto Niki | Yuuya Kibi | 6-2, 7-67 | | match details | ||
| 24.03.14 | 1st round | Takuto Niki | Keisuke Watanuki | 6-3, 6-1 | | match details | ||
| 17.03.14 | 1st round | Takuto Niki | Hiromasa Oku | 7-65, 6-3 | | match details | Japan F2 | Hard |
| 17.03.14 | 2nd round | Takuto Niki | Souma Kuribayashi | 6-1, 6-1 | | match details | ||
| 17.03.14 | 1/4 | Danai Udomchoke | Takuto Niki | 7-5, 6-2 | | match details | ||
| 10.03.14 | 1/2 | Takuto Niki | Kento Takeuchi | 6-4, 7-66 | | match details | Japan F1 | Hard |
| 10.03.14 | 1st round | Takuto Niki | Bumpei Sato | 6-0, 4-6, 6-3 | | match details | ||
| 10.03.14 | 2nd round | Takuto Niki | Jules Marie | 6-3, 5-7, 7-5 | | match details | ||
| 10.03.14 | fin | Di Wu | Takuto Niki | 6-2, 6-4 | | match details | ||
| 10.03.14 | 1/4 | Takuto Niki | Liang-Chi Huang | 6-2, 6-1 | | match details | ||
| 24.02.14 | 2nd round | Yasutaka Uchiyama | Takuto Niki | 6-3, 6-4 | | match details | Australia F2 | Hard |
| 24.02.14 | 1st round | Takuto Niki | Li Tu | 6-4, 6-4 | | match details | ||
| 17.02.14 | 1st round | Takuto Niki | Brydan Klein | 7-63, 6-71, 6-2 | | match details | Australia F1 | Hard |
| 17.02.14 | 2nd round | Dane Propoggia | Takuto Niki | 6-4, 7-64 | | match details | ||
| 09.12.13 | 1st round | Takuto Niki | Siyu Liu | 6-4, 6-1 | | match details | Cambodia F3 | Hard |
| 09.12.13 | 2nd round | Alexander Zhurbin | Takuto Niki | 6-0, 6-4 | | match details | ||
| 02.12.13 | 1st round | Alexander Zhurbin | Takuto Niki | 7-64, 6-3 | | match details | Cambodia F2 | Hard |
| 08.11.13 | q 1 | Yasutaka Uchiyama | Takuto Niki | 7-65, 6-4 | | match details | Yokohama Challenger | Hard |
| 23.09.13 | 1st round | Claudio Fortuna | Takuto Niki | 6-3, 6-3 | | match details |  Turkey F38 | Hard |
| 16.09.13 | 1st round | Jared Donaldson | Takuto Niki | 7-65, 7-65 | | match details | Turkey F37 | Hard |
| 09.09.13 | 1st round | Dimitri Bretting | Takuto Niki | 6-3, 6-75, 6-3 | | match details | Turkey F36 | Hard |
| 26.08.13 | 2nd round | Ting Yu Chuang | Takuto Niki | 6-3, 6-4 | | match details | Chinese Taipei | Hard |
| 26.08.13 | 1st round | Takuto Niki | Tung-Lin Wu | 6-2, 6-4 | | match details | ||
| 03.06.13 | 2nd round | Takuto Niki | Brendan Moore | 6-2, 2-0, Brendan Moore - retired | | match details | Guam F1 | Hard |
| 03.06.13 | 1/2 | Saketh-Sai Myneni | Takuto Niki | 6-4, 7-64 | | match details | ||
| 03.06.13 | 1/4 | Takuto Niki | Bumpei Sato | 6-2, 6-4 | | match details | ||
| 03.06.13 | 1st round | Takuto Niki | David Barclay | 6-2, 7-5 | | match details | ||
| 27.05.13 | 1/4 | Jacob Grills | Takuto Niki | 7-61, 7-60 | | match details | Thailand F2 | Hard |
| 27.05.13 | 1st round | Takuto Niki | Pruchya Isarow | 7-5, 6-2 | | match details | ||
| 27.05.13 | 2nd round | Takuto Niki | Elbert Sie | 6-4, 6-0 | | match details | ||
| 20.05.13 | 1st round | Takuto Niki | Logan Mackenzie | 6-4, 6-4 | | match details | Thailand F1 | Hard |
| 20.05.13 | 1/4 | Karunuday Singh | Takuto Niki | 6-4, 6-2 | | match details | ||
| 20.05.13 | 2nd round | Takuto Niki | Aaron Leeder-Chard | 6-3, 6-1 | | match details | ||
| 06.05.13 | 1st round | Takuto Niki | Scott Griekspoor | 4-6, 6-2, 6-3 | | match details | Israel F9 | Hard |
| 06.05.13 | 2nd round | Takuto Niki | Michael Laser | 7-5, 3-6, 6-3 | | match details | ||
| 06.05.13 | 1/4 | James Marsalek | Takuto Niki | 6-2, 6-2 | | match details | ||
| 29.04.13 | 2nd round | Gavin Van Peperzeel | Takuto Niki | 6-3, 6-3 | | match details | Israel F8 | Hard |
| 29.04.13 | 1st round | Takuto Niki | Bar Tzuf Botzer | 6-75, 6-1, 6-1 | | match details | ||
| 22.04.13 | 1/4 | Takuto Niki | Julien Dubail | 6-4, 4-6, 6-3 | | match details | Israel F7 | Hard |
| 22.04.13 | 1/2 | Takuto Niki | Gavin Van Peperzeel | 7-5, 6-4 | | match details | ||
| 22.04.13 | 1st round | Takuto Niki | Tal Goldengoren | 3-6, 6-2, 6-4 | | match details | ||
| 22.04.13 | 2nd round | Takuto Niki | Or Ram-Harel | 4-6, 6-3, 6-3 | | match details | ||
| 22.04.13 | fin | Enzo Couacaud | Takuto Niki | 7-5, 6-1 | | match details | ||
| 01.04.13 | 1/4 | Takuto Niki | Cheong-Eui Kim | 6-4, 6-2 | | match details | Japan F4 | Hard |
| 01.04.13 | 1st round | Takuto Niki | Yusuke Watanuki | 6-1, 6-2 | | match details | ||
| 01.04.13 | 1/2 | Issei Okamura | Takuto Niki | 7-65, 2-6, 6-4 | | match details | ||
| 01.04.13 | 2nd round | Takuto Niki | Koki Takada | 6-2, 6-3 | | match details | ||
| 25.03.13 | 2nd round | Takuto Niki | Masato Shiga | 6-2, 7-65 | | match details | Japan F3 | Hard |
| 25.03.13 | 1/4 | Yasutaka Uchiyama | Takuto Niki | 7-5, 6-2 | | match details | ||
| 25.03.13 | 1st round | Takuto Niki | Shotaro Goto | 3-6, 6-2, 6-2 | | match details | ||
| 18.03.13 | 1st round | Takuto Niki | Yusuke Watanuki | 7-5, 6-3 | | match details | Japan F2 | Hard |
| 18.03.13 | 2nd round | Takuto Niki | Jung-Woong Na | 6-4, 5-7, 6-4 | | match details | ||
| 18.03.13 | 1/4 | Hiroki Kondo | Takuto Niki | 6-73, 6-4, 6-3 | | match details | ||
| 11.03.13 | 1st round | Masaki Sasai | Takuto Niki | 6-2, 6-2 | | match details | Japan F1 | Hard |
| 24.02.13 | q 1 | Jacob Grills | Takuto Niki | 5-7, 6-4, 7-5 | | match details | Sydney Challenger | Hard |
| 23.01.13 | 1st round | Suk-Young Jeong | Takuto Niki | 7-5, 6-73, 6-4 | | match details | Maui Challenger | Hard |
| 21.01.13 | qual. | Takuto Niki | Hsien-Yin Peng | 6-4, 6-73, 6-2 | | match details | ||
| 04.08.12 | q 1 | Chase Buchanan | Takuto Niki | 6-4, 4-0, Takuto Niki - retired | | match details | Aptos Challenger | Hard |
| 28.07.12 | q 1 | Milan Pokrajac | Takuto Niki | 2-6, 7-612, 6-2 | | match details | Vancouver Challenger | Hard |
| 17.07.12 | 1st round | Blake Strode | Takuto Niki | 6-3, 7-63 | | match details | Granby Challenger | Hard |
| 21.05.12 | 1st round | Yang Lu | Takuto Niki | 6-3, 6-1 | | match details | China F8 | Hard |
| 14.05.12 | 1st round | Takuto Niki | Nian Feng | 6-0, 6-4 | | match details | China F7 | Hard |
| 14.05.12 | 1/4 | Yu Chang | Takuto Niki | 6-1, 6-3 | | match details | ||
| 14.05.12 | 2nd round | Takuto Niki | He Feng | 3-6, 6-0, 6-3 | | match details | ||
| 07.05.12 | 1st round | Mark-Alexander Kepler | Takuto Niki | 4-6, 6-3, 4-2, Takuto Niki - retired | | match details | Thailand F1 | Hard |
| 16.04.12 | 1/4 | Takuto Niki | Vijayant Malik | 6-4, 7-65 | | match details | China F6 | Hard |
| 16.04.12 | 1st round | Takuto Niki | Kamil Capkovic | 4-6, 7-66, 6-2 | | match details | ||
| 16.04.12 | 2nd round | Takuto Niki | Zhuoyang Qiu | 6-4, 6-4 | | match details | ||
| 16.04.12 | 1/2 | Di Wu | Takuto Niki | 6-1, 6-4 | | match details | ||
| 09.04.12 | 1st round | Takuto Niki | You-Xu Shen | 6-1, 3-6, 6-0 | | match details | China F5 | Hard |
| 09.04.12 | 2nd round | Ze Zhang | Takuto Niki | 6-1, 6-4 | | match details | ||
| 02.04.12 | 1/4 | Luke Saville | Takuto Niki | 4-6, 6-2, 6-3 | | match details | Japan F4 | Hard |
| 02.04.12 | 1st round | Takuto Niki | Kenya Takenaka | 6-3, 6-4 | | match details | ||
| 02.04.12 | 2nd round | Takuto Niki | Bumpei Sato | 6-2, 6-4 | | match details | ||
| 26.03.12 | 1st round | Takuto Niki | Bumpei Sato | 6-4, 6-4 | | match details | Japan F3 | Hard |
| 26.03.12 | 2nd round | Yuichi Ito | Takuto Niki | 6-2, 3-6, 7-5 | | match details | ||
| 19.03.12 | 2nd round | Takuto Niki | Masaki Sasai | 4-6, 6-4, 6-4 | | match details | Japan F2 | Hard |
| 19.03.12 | 1/4 | Takuto Niki | Sho Katayama | 6-4, 6-3 | | match details | ||
| 19.03.12 | fin | Yu Chang | Takuto Niki | 6-2, 6-3 | | match details | ||
| 19.03.12 | 1/2 | Takuto Niki | Hiroyasu Ehara | 7-5, 7-5 | | match details | ||
| 19.03.12 | 1st round | Takuto Niki | Shintaro Imai | 6-73, 7-67, 7-610 | | match details | ||
| 12.03.12 | 1st round | Takuto Niki | Bumpei Sato | 6-73, 6-4, 4-0, Bumpei Sato - retired | | match details | Japan F1 | Hard |
| 12.03.12 | 1/4 | Yasutaka Uchiyama | Takuto Niki | 6-2, 7-5 | | match details | ||
| 12.03.12 | 2nd round | Takuto Niki | Gengo Kikuchi | 6-1, 6-2 | | match details | ||
| 17.10.11 | 1st round | Takuto Niki | Laurent-Olivier Daxhelet | 6-2, 6-4 | | match details |  Kuwait F1 | Hard |
| 17.10.11 | 2nd round | Mohammad Ghareeb | Takuto Niki | 6-3, 6-3 | | match details | ||
| 03.10.11 | 2nd round | Erik Chvojka | Takuto Niki | 6-1, 6-72, 6-1 | | match details | Turkey F26 | Hard |
| 03.10.11 | 1st round | Takuto Niki | Andrei Ciumac | 6-4, 6-0 | | match details | ||
| 26.09.11 | 1st round | Takuto Niki | David Rice | 4-6, 6-3, 6-3 | | match details | Turkey F25 | Hard |
| 26.09.11 | 1/4 | Ivan Sergeyev | Takuto Niki | 6-2, 6-4 | | match details | ||
| 26.09.11 | 2nd round | Takuto Niki | Paris Gemouchidis | 7-64, 6-0 | | match details | ||
| 04.07.11 | 1st round | Hsin-Han Lee | Takuto Niki | 6-4, 6-4 | | match details | Chinese Taipei | Hard |
| 13.06.11 | 1st round | Takuto Niki | Musashi Hoshino | 6-2, 6-4 | | match details | Japan F6 | Hard |
| 13.06.11 | 1/4 | Bumpei Sato | Takuto Niki | 6-2, 7-63 | | match details | ||
| 13.06.11 | 2nd round | Takuto Niki | Gengo Kikuchi | 6-1, 6-4 | | match details | ||
| 30.05.11 | 1st round | Divij Sharan | Takuto Niki | 6-3, 7-5 | | match details | India F7 | Hard |
| 23.05.11 | 1/2 | Rohan Gajjar | Takuto Niki | 7-62, 3-6, 6-4 | | match details | India F6 | Hard |
| 23.05.11 | 1/4 | Takuto Niki | Vitali Reshetnikov | 6-4, 6-4 | | match details | ||
| 23.05.11 | 1st round | Takuto Niki | U M Gugan Verma | 6-0, 6-0 | | match details | ||
| 23.05.11 | 2nd round | Takuto Niki | Vinod Gowda | 7-64, 6-1 | | match details | ||
| 09.05.11 | 1st round | Mikhail Biryukov | Takuto Niki | 0-6, 6-4, 6-1 | | match details |  Kazakhstan F3 | Hard |
| 02.05.11 | 1/2 | Takuto Niki | Stanislav Vovk | 6-4, 5-7, 7-5 | | match details | Kazakhstan F2 | Hard |
| 02.05.11 | 1st round | Takuto Niki | Vitali Reshetnikov | 6-4, 6-0 | | match details | ||
| 02.05.11 | fin | Federico Gaio | Takuto Niki | 0-6, 6-4, 6-2 | | match details | ||
| 02.05.11 | 2nd round | Takuto Niki | Denis Matsukevitch | 6-0, 4-6, 6-2 | | match details | ||
| 02.05.11 | 1/4 | Takuto Niki | Mikhail Biryukov | 6-3, 6-1 | | match details | ||
| 25.04.11 | 1st round | Federico Gaio | Takuto Niki | 7-62, 3-6, 6-1 | | match details | Kazakhstan F1 | Hard |
| 11.04.11 | 2nd round | Joshua Milton | Takuto Niki | 6-2, 6-2 | | match details | Thailand F3 | Hard |
| 11.04.11 | 1st round | Takuto Niki | Andrew Gerst | 6-4, 6-3 | | match details | ||
| 18.10.10 | 2nd round | Harri Heliovaara | Takuto Niki | 6-4, 6-72, 6-1 | | match details | Japan F10 | Hard |
| 18.10.10 | 1st round | Takuto Niki | Bumpei Sato | 6-1, 6-0 | | match details | ||
| 11.10.10 | 2nd round | Hiroki Moriya | Takuto Niki | 6-4, 6-1 | | match details | Japan F9 | Hard |
| 11.10.10 | 1st round | Takuto Niki | Yuki Matsuo | 7-65, 7-5 | | match details | ||
| 20.09.10 | 2nd round | Sean Thornley | Takuto Niki | 6-4, 6-4 | | match details |  Great Britain | Hard |
| 20.09.10 | 1st round | Takuto Niki | Alan Bevan | 6-2, 6-2 | | match details | ||
| 13.09.10 | 1st round | Takuto Niki | Kyle Brassington | 7-64, 7-63 | | match details | Great Britain | Hard |
| 13.09.10 | 1/4 | Daniel Evans | Takuto Niki | 7-65, 7-62 | | match details | ||
| 13.09.10 | 2nd round | Takuto Niki | Marshall Tutu | 6-2, 6-2 | | match details | ||
| 09.08.10 | 1st round | Takuto Niki | Sean Berman | 6-3, 6-4 | | match details | Thailand F2 | Hard |
| 09.08.10 | 2nd round | Rupesh Roy | Takuto Niki | 6-2, 6-3 | | match details | ||
| 02.08.10 | 1st round | Takuto Niki | Perakiat Siriluethaiwattana | 4-6, 6-3, 6-4 | | match details | Thailand F1 | Hard |
| 02.08.10 | 2nd round | Abdullah Maqdes | Takuto Niki | 6-1, 6-0 | | match details | ||
| 31.05.10 | 1st round | Takuto Niki | James Ludlow | 3-6, 6-3, 7-67 | | match details | Guam F1 | Hard |
| 31.05.10 | 2nd round | Takuto Niki | Brendan Moore | 6-4, 5-7, 6-3 | | match details | ||
| 31.05.10 | 1/4 | Tatsuma Ito | Takuto Niki | 6-2, 6-1 | | match details | ||
| 29.03.10 | 1/4 | Go Soeda | Takuto Niki | 6-4, 4-6, 6-1 | | match details | Japan F3 | Hard |
| 29.03.10 | 1st round | Takuto Niki | Hiroki Kondo | 6-3, 6-1 | | match details | ||
| 29.03.10 | 2nd round | Takuto Niki | Sho Katayama | 7-62, 7-66 | | match details | ||
| 22.03.10 | 2nd round | Hiroki Moriya | Takuto Niki | 7-66, 6-3 | | match details | Japan F2 | Hard |
| 22.03.10 | 1st round | Takuto Niki | Koki Matsunaga | 6-2, 3-6, 6-3 | | match details | ||
| 15.03.10 | 1st round | Hiroki Moriya | Takuto Niki | 6-2, 6-3 | | match details | Japan F1 | Hard |
| 16.11.09 | q 1 | Woong-Sun Jun | Takuto Niki | 6-4, 6-4 | | match details | Yokohama Challenger | Hard |
| 12.10.09 | 1st round | Yuuya Kibi | Takuto Niki | 6-3, 4-6, 6-3 | | match details | Japan F8 | Hard |
| 20.04.09 | 2nd round | Masato Hatanaka | Takuto Niki | 7-66, 3-6, 7-5 | | match details | India F3 | Hard |
| 20.04.09 | 1st round | Takuto Niki | Vijayant Malik | 6-2, 5-7, 6-4 | | match details | ||
| 17.11.08 | q 1 | Yuki Matsuo | Takuto Niki | 5-7, 6-1, 6-2 | | match details | Yokohama | Hard |
| 20.10.08 | 1/4 | Hiroki Kondo | Takuto Niki | 6-0, 6-1 | | match details | Japan F11 | Hard |
| 20.10.08 | 1st round | Takuto Niki | Ko Suzuki | 6-1, 6-1 | | match details | ||
| 20.10.08 | 2nd round | Takuto Niki | Junn Mitsuhashi | 7-63, 6-2 | | match details | ||
| 08.09.08 | 1st round | Satoshi Iwabuchi | Takuto Niki | 6-3, 6-4 | | match details | Japan F8 | Hard |
| 10.09.07 | 1st round | Min-Hyoek Cho | Takuto Niki | 6-4, 6-1 | | match details | Japan F8 | Hard |
