Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| Challenger Granby | 2023/07/17 23:15 | Alexander Cozbinov v Christian Harrison | 1-6,3-6 |
| Challenger Granby | 2023/07/17 16:05 | Nick Chappell v Alexander Cozbinov | 7-6,0-6,7-6 |
| Challenger Granby | 2023/07/16 20:15 | Dan Martin v Alexander Cozbinov | 6-1,4-6,1-6 |
| ITF M25 Laval | 2023/07/14 14:45 | Blaise Bicknell v Alexander Cozbinov | 6-4,0-6,6-2 |
| ITF M25 Laval | 2023/07/13 16:00 | Preston Brown v Alexander Cozbinov | 2-6,1-6 |
| ITF M25 Laval | 2023/07/11 14:15 | Alexandre Bergeron v Alexander Cozbinov | 2-6,1-6 |
| Challenger Bloomfield Hills | 2023/07/03 15:15 | Alexander Cozbinov v Ernesto Escobedo | 6-7,6-4,1-6 |
| Davis Cup | 2023/06/16 08:35 | Liam Delicata v Alexander Cozbinov | 6-3,3-6,0-6 |
| ITF M15 Uslar | 2023/07/22 09:45 | Christoph Negritu v Sebastian Prechtel | 2-6,4-6 |
| ITF M15 Uslar | 2023/07/21 10:00 | Jeremy Schifris v Christoph Negritu | 1-6,2-6 |
| ITF M15 Uslar | 2023/07/20 12:25 | Esteban Bruna v Christoph Negritu | 2-6,0-6 |
| ITF M15 Uslar | 2023/07/19 16:50 | Rostislav Galfinger v Christoph Negritu | 2-6,0-6 |
| ITF M15 Monastir | 2023/06/08 08:30 | Christoph Negritu v Thomas Braithwaite | 2-6,6-4,4-6 |
| ITF M15 Monastir | 2023/06/07 13:15 | Christoph Negritu v Bruno Fernandez | 6-2,6-0 |
| ITF M15 Warmbad-Villach | 2023/05/22 12:00 | Christoph Negritu v Tommaso Compagnucci | 6-7,5-7 |
| ITF M15 Meerbusch | 2023/04/26 11:40 | Christoph Negritu v Marat Sharipov | 6-2,4-6,4-6 |