| Califórnia - UTR Pro Tennis Series | 2021/08/24 21:00 | Jonas Maier v Lucas Gomez | 2-6,3-6 |
| 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 |
| Califórnia - UTR Pro Tennis Series | 2021/08/24 19:30 | Timothy Sah v Gianluca Brunkow | 3-6,6-3,5-1 |
| Califórnia - UTR Pro Tennis Series | 2021/08/23 16:30 | Lucas Gomez v Gianluca Brunkow | 7-5,6-3 |
| Califórnia - UTR Pro Tennis Series | 2021/08/22 15:00 | Bryce Pereira v Gianluca Brunkow | 3-6,4-6 |