Stadion: Court 1 Round: 54 Ground: Hardcourt outdoor
| ITF - M15 - Ithaca | 2021/10/04 13:00 | Jonas Maier v Mattia Bernardi | 6-2,6-2 |
| ITF - M15 - Cancun | 2021/09/26 17:00 | Alex Jones v Jonas Maier | 6-1,6-2 |
| ITF - M15 - Cancun | 2021/09/23 19:15 | Jonas Maier v Osgar O'Hoisin | 6-3,4-6,4-6 |
| ITF - M15 - Cancun | 2021/09/22 18:10 | Wishaya Trongcharoenchaikul v Jonas Maier | 1-6,3-6 |
| ITF - M15 - Cancun | 2021/09/21 14:00 | Jonas Maier v Samuel Sanchez | 6-3,6-1 |
| UTR Pro Tennis Series - Kalifornien | 2021/08/25 21:30 | Jonas Maier v Gianluca Brunkow | 5-7,2-6 |
| UTR Pro Tennis Series - Kalifornien | 2021/08/24 21:00 | Jonas Maier v Lucas Gomez | 2-6,3-6 |
| UTR Pro Tennis Series - Kalifornien | 2021/08/23 15:00 | Timothy Sah v Jonas Maier | 4-6,6-1,6-3 |