Stadium: Court 9 Round: 44 Ground: Hardcourt outdoor
| UTR Pro Tennis Series - Californië | 2021/08/25 21:30 | Jonas Maier v Gianluca Brunkow | 5-7,2-6 |
| UTR Pro Tennis Series - Californië | 2021/08/24 21:00 | Jonas Maier v Lucas Gomez | 2-6,3-6 |
| UTR Pro Tennis Series - Californië | 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 - Cancun | 2021/09/20 15:00 | Samuel Sanchez v Jorge Alejandro Olaya | 6-3,5-7,10-4 |