| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2023 | 4/3 | 3/2 | 0/0 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2022 | 4/6 | 1/2 | 1/1 | 2/3 | 0/0 | 0/0 | 0/0 |
| 2021 | 1/1 | 0/0 | 0/0 | 1/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 1/2 | 1/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 2/3 | 0/0 | 1/2 | 1/1 | 0/0 | 0/0 | 0/0 |
| TOTAL | 12/15 | 5/5 | 2/4 | 5/6 | 0/0 | 0/0 | 0/0 |
| perc. % | 44.44 % | 50 % | 33.33 % | 45.45 % | 0 % | 0 % | 0 % |
J Mercer / Fixtures
| no matches found |
J Mercer form
J Mercer / Latest Scores
| 14.11.23 | qual. | Luc Fomba | J Mercer | 6-4, 6-4 |  | match details |  M25 Columbus | I. hard |
| 13.11.23 | q 1 | J Mercer | Alex Fuchs | 7-5, 4-6, 10-4 |  | match details | ||
| 25.07.23 | qual. | Daniel Milavsky | J Mercer | 4-6, 6-4, 10-8 | | match details | M25 Edwardsville | Hard |
| 24.07.23 | q 1 | J Mercer | Matthew Hulme | 6-4, 7-5 | | match details | ||
| 12.07.23 | 1st round | Jaden Weekes | J Mercer | 6-1, 6-2 | | match details |  M25 Laval | Hard |
| 10.07.23 | qual. | J Mercer | Gabrielius Guzauskas | 2-6, 6-3, 10-6 | | match details | ||
| 09.07.23 | q 1 | J Mercer | Yanael Lundqvist | 6-1, 6-2 | | match details | ||
| 16.11.22 | 1st round | Patrick Fletchall | J Mercer | 6-4, 6-4 | | match details | M15 East | I. hard |
| 15.11.22 | qual. | Jeremy Schifris | J Mercer | 6-2, 6-1 | | match details | ||
| 14.11.22 | q 2 | J Mercer | Jan Koupil | 6-4, 7-64 | | match details | ||
| 13.11.22 | q 1 | J Mercer | Stefan Menichella | 2-6, 6-2, 10-3 | | match details | ||
| 07.11.22 | q 1 | Jody Maginley | J Mercer | 7-5, 4-6, 10-7 | | match details | M15 Winston | I. hard |
| 31.07.22 | q 1 | Alafia Ayeni | J Mercer | 3-6, 6-2, 6-4 | | match details | Lexington Challenger | Hard |
| 12.07.22 | qual. | Christian Lakoseljac | J Mercer | 6-3, 6-2 | | match details | M15 Pittsburgh | Clay |
| 11.07.22 | q 1 | J Mercer | Daniel Milavsky | 6-4, 6-4 | | match details | ||
| 21.06.22 | qual. | Presley Thieneman | J Mercer | 6-3, 6-4 | | match details | M15 South | Hard |
| 20.06.22 | q 1 | J Mercer | Benedict Horn-Bourque | 6-0, 6-1 | | match details | ||
| 16.11.21 | qual. | Nico Mostardi | J Mercer | 6-1, 7-5 | | match details | M15 East | I. hard |
| 15.11.21 | q 1 | J Mercer | Matthew Dellavedova | 7-66, 6-2 | | match details | ||
| 22.10.19 | qual. | Murphy Cassone | J Mercer | 6-3, 2-6, 10-8 | | match details | M25 Fayetteville | Hard |
| 21.10.19 | q 2 | J Mercer | Ian Chadwell | 6-4, 6-4 | | match details | ||
| 01.07.19 | q 1 | Andrew Zhang | J Mercer | 6-2, 6-1 | | match details | M15 Pittsburgh | Clay |
| 18.11.18 | qual. | Tim Ruehl | J Mercer | 6-3, 6-0 | | match details | USA F33 | I. hard |
| 17.11.18 | q 1 | J Mercer | Bartosz Losiak | 6-4, 6-2 | | match details | ||
| 26.10.18 | Alejandro Valencia | J Mercer | 6-4, 7-5 | | match details | USA F29 | Clay | |
| 26.06.18 | q 2 | Jordi Arconada | J Mercer | 6-4, 6-1 | | match details | USA F18 | Clay |
| 24.06.18 | q 1 | J Mercer | Rico Gore | 6-1, 6-1 | | match details |
