Stadium: Teremeer (4) Round: 62 Ground: Hardcourt outdoor
| ITF M15 Troisdorf | 2021/05/10 11:00 | Buvaysar Gadamauri v Maier, Jonas | 5-7,6-4,4-10 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Maier, Jonas v Loncar, Stefan | 6-2,3-6,10-8 |
| ITF - M15 Monastir | 2021/04/12 08:00 | Maier, Jonas v Amaury Raynel | 4-6,2-6 |
| ITF - M15 Monastir | 2021/04/11 09:00 | Simon Sedliak v Maier, Jonas | 2-6,4-6 |
| UTR Pro Tennis Series California | 2021/02/20 17:30 | Maier, Jonas v Keenan Mayo | 5-7,0-0 |
| UTR Pro Tennis Series California | 2021/02/19 16:00 | Ortlip, Joshua v Maier, Jonas | 6-7,6-2,5-4 |
| UTR Pro Tennis Series California | 2021/02/18 20:30 | Sarkissian, Alexander v Maier, Jonas | 6-3,6-4 |
| UTR Pro Tennis Series California | 2021/02/16 21:30 | Bailey, Aaron v Maier, Jonas | 6-3,6-4 |
| ITF M15 Troisdorf | 2021/05/10 11:00 | Andres Gabriel Ciurletti v Timo Stodder | 3-6,2-6 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Clavel, Tom v Timo Stodder | 1-6,1-6 |
| ITF - M15 Sharm El Sheikh | 2021/04/07 07:30 | Mukund Sasikumar v Timo Stodder | 6-4,7-5 |
| ITF - M15 Sharm El Sheikh | 2021/03/29 10:00 | Timo Stodder v Shohei Chikami | 6-2,3-6,6-10 |
| ITF - M15 Sharm El Sheikh | 2021/03/28 13:00 | Timo Stodder v Luria, Emmanuel | 6-3,6-3 |
| German Championship | 2020/12/10 14:00 | Timo Stodder v Elmar Ejupovic | 1-6,3-6 |
| German Championship | 2020/12/09 12:00 | Timo Stodder v Max Wiskandt | 6-4,6-4 |
| ITF - M15 Héraklion | 2020/11/27 08:00 | Adrian Andreev v Timo Stodder | 6-3,6-3 |