Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ATP Brisbane Qual | 2017/12/30 04:50 | Quentin Halys v Michael Mmoh | 4-6,4-6 |
| Challenger Istanbul | 2021/09/16 08:00 | Quentin Halys v Illya Marchenko | 3-6,6-2,6-2 |
| Challenger Istanbul | 2021/09/14 07:00 | Bernard Tomic v Quentin Halys | 0-6,1-6 |
| Challenger Kyiv | 2021/09/06 09:35 | Nuno Borges v Quentin Halys | 6-3,7-5 |
| US Open | 2021/08/30 22:10 | Dominik Koepfer v Quentin Halys | 6-4,3-6,4-6,6-3,6-4 |
| US Open | 2021/08/27 19:20 | Quentin Halys v Ernests Gulbis | 6-4,7-5 |
| US Open | 2021/08/26 23:00 | Kacper Zuk v Quentin Halys | 6-7,4-6 |
| US Open | 2021/08/25 17:45 | Quentin Halys v Samir Banerjee | 6-1,6-0 |
| Challenger San Marino | 2021/08/10 15:30 | Salvatore Caruso v Quentin Halys | 3-6,6-2,6-2 |
| Challenger Cary | 2021/09/14 21:25 | Michael Mmoh v Noah Rubin | 6-1,6-3 |
| US Open | 2021/08/25 16:40 | Ben Shelton v Michael Mmoh | 7-6,7-6 |
| ATP Toronto | 2021/08/07 22:10 | Yoshihito Nishioka v Michael Mmoh | 7-6,6-2 |
| ATP Washington | 2021/07/31 19:50 | Maxime Cressy v Michael Mmoh | 6-2,7-5 |
| French Open | 2021/05/25 08:30 | Ramkumar Ramanathan v Michael Mmoh | 2-6,7-6,6-3 |
| Challenger Zagreb | 2021/05/10 10:35 | Botic Van De Zandschulp v Michael Mmoh | 6-4,3-6,7-5 |
| Challenger Tallahassee | 2021/04/21 19:00 | Ryan Harrison v Michael Mmoh | 4-6,3-6 |
| Challenger Tallahassee | 2021/04/19 19:10 | Peter Polansky v Michael Mmoh | 5-7,6-7 |