Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| Challenger Champaign | 2023/11/13 18:40 | Cozbinov, Alexander v Perez, Alfredo | 6-7,4-6 |
| Challenger Champaign | 2023/11/12 20:15 | Cozbinov, Alexander v William Mroz Mroz | 6-2,6-3 |
| Challenger Knoxville | 2023/11/07 23:15 | Aidan Mchugh v Cozbinov, Alexander | 3-6,7-5,6-3 |
| Challenger Knoxville | 2023/11/06 20:10 | Evgeny Karlovskiy v Cozbinov, Alexander | 6-4,7-6 |
| Challenger Knoxville | 2023/11/06 00:50 | Ezekiel Clark v Cozbinov, Alexander | 1-6,2-6 |
| Challenger Charlottesville | 2023/10/29 14:00 | Dylan Dietrich v Cozbinov, Alexander | 6-4,6-7,6-3 |
| ITF M15 Las Vegas | 2023/10/18 20:25 | Cozbinov, Alexander v Mitsui, Shunsuke | 2-6,4-6 |
| Challenger Fairfield | 2023/10/08 17:00 | Stefan Dostanic v Cozbinov, Alexander | 7-6,6-1 |
| ITF - M15 Monastir | 2023/12/07 11:30 | Christoph Negritu v Kirill Kivattsev | 6-7,3-6 |
| ITF - M15 Monastir | 2023/12/06 10:10 | Matthew William Donald v Christoph Negritu | 6-4,3-6,3-6 |
| ITF - M15 Monastir | 2023/12/01 08:30 | Cezar Cretu v Christoph Negritu | 7-5,6-4 |
| ITF - M15 Monastir | 2023/11/30 08:30 | Ronetto Van Tilburg v Christoph Negritu | 1-6,4-6 |
| ITF - M15 Monastir | 2023/11/28 10:10 | Rayen Hermassi v Christoph Negritu | 3-6,0-6 |
| ITF - M15 Monastir | 2023/11/26 08:30 | Simon Beaupain v Christoph Negritu | 4-6,6-3,7-6 |
| ITF - M15 Monastir | 2023/11/25 08:30 | Jakub Paul v Christoph Negritu | 3-6,4-6 |
| ITF - M15 Monastir | 2023/11/24 10:45 | Christoph Negritu v Louis Tessa | 7-5,7-5 |