| UTR Pro Tennis Series Atlanta | 2021/04/17 14:00 | Matthias Haim v Alexis Gurmendi | 2-6,3-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/16 15:30 | McClain Kessler v Matthias Haim | 6-7,3-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/15 16:30 | Drew Van Orderlain v Matthias Haim | 5-7,3-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/13 14:00 | Evan Bynoe v Matthias Haim | 3-6,6-7 |
| ITF Germany F16 | 2018/10/24 10:00 | Matthias Haim v Arthur Reymond | 3-6,4-6 |
| ITF Germany F16 | 2018/10/23 15:20 | Matthias Haim v Bastien Presuhn | 7-6,7-6 |
| ITF Italy F31 | 2018/10/11 13:30 | Matthias Haim v Wilson Leite | 4-6,3-6 |
| ITF Italy F30 | 2018/10/02 12:00 | Walter Trusendi v Matthias Haim | 6-3,7-5 |