| Califórnia - UTR Pro Tennis Series | 2021/08/23 15:00 | Timothy Sah v Jonas Maier | 4-6,6-1,6-3 |
| ITF - M15 Gdynia | 2021/08/08 08:30 | Jonas Maier v Piotr Pawlak | 4-6,1-6 |
| ITF - M15 Frederiksberg | 2021/08/01 10:00 | Carl Emil Overbeck v Jonas Maier | 6-2,6-3 |
| UTR Pro Tennis Series - Nevada | 2021/06/24 16:30 | Nick Lagaev v Jonas Maier | 6-4,5-2 |
| UTR Pro Tennis Series - Nevada | 2021/06/23 18:00 | Mac Kiger v Jonas Maier | 6-3,6-7,4-6 |
| UTR Pro Tennis Series - Nevada | 2021/06/21 15:00 | Bjorn Swenson v Jonas Maier | 6-4,6-4 |
| ITF - M15 Kouvola | 2021/05/26 13:30 | Jonas Maier v Joao Victor C Loureiro | 4-6,3-6 |
| ITF - M15 Kouvola | 2021/05/25 09:10 | Jonas Maier v Oskar Stumpf | 6-3,6-0 |
| Califórnia - UTR Pro Tennis Series | 2021/08/23 16:30 | Lucas Gomez v Gianluca Brunkow | 7-5,6-3 |
| Califórnia - UTR Pro Tennis Series | 2021/07/31 15:00 | Andrew Rogers v Lucas Gomez | 7-6,6-1 |
| Califórnia - UTR Pro Tennis Series | 2021/07/30 18:00 | Lucas Gomez v Ethan Quinn | 6-2,6-2 |
| Califórnia - UTR Pro Tennis Series | 2021/07/26 18:00 | Luke Vandecasteele v Lucas Gomez | 5-7,4-5 |
| Califórnia - UTR Pro Tennis Series | 2021/07/25 21:00 | Lucas Gomez v Dzianis Zharyn | 6-3,6-2 |
| Califórnia - UTR Pro Tennis Series | 2021/07/24 18:00 | Maxwell McKennon v Lucas Gomez | 6-1,3-6,6-3 |
| Califórnia - UTR Pro Tennis Series | 2021/07/23 16:30 | Lucas Gomez v Kyle Kang | 7-6,6-6 |
| Califórnia - UTR Pro Tennis Series | 2021/07/21 19:30 | Alessandro-D Ventre v Lucas Gomez | 6-3,5-7,3-6 |