Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Southaven | 2023/08/09 21:35 | Ravichander, Ishaan v Kotzen, Alexander | 6-7,1-6 |
| ITF M25 Decatur | 2023/08/03 19:20 | Kotzen, Alexander v Jonah Braswell | 2-6,6-0,6-7 |
| ITF M25 Decatur | 2023/08/02 22:15 | Jacob Brumm v Kotzen, Alexander | 3-6,1-6 |
| ITF M15 Pittsburgh | 2023/07/27 15:00 | Kotzen, Alexander v Bruno Kuzuhara | 6-4,6-7,2-6 |
| ITF M15 Pittsburgh | 2023/07/26 17:45 | Kotzen, Alexander v Fabien Salle | 6-4,6-1 |
| UTR Pro California | 2023/07/23 17:00 | Kotzen, Alexander v Constantinos Djakouris | 6-3,7-5 |
| UTR Pro California | 2023/07/22 18:00 | Kotzen, Alexander v Karl Lee | 6-2,4-6,6-2 |
| UTR Pro California | 2023/07/21 23:00 | Kotzen, Alexander v Tyler Davis | 6-2,6-3 |
| ITF M25 Southaven | 2023/08/09 23:50 | Harry Rock v Martin Damm | 1-6,1-6 |
| Challenger Lexington | 2023/07/31 20:00 | Strong Kirchheimer v Martin Damm | 6-7,7-6,7-6 |
| Challenger Salinas | 2023/07/25 18:40 | Martin Damm v Bernard Tomic | 6-3,1-6,4-6 |
| Challenger Salinas | 2023/07/24 15:00 | Martin Damm v Juan Sebastian Gomez | 6-3,6-1 |
| Challenger Granby | 2023/07/16 22:30 | Colin Sinclair v Martin Damm | 6-7,7-6,6-3 |
| Challenger Chicago | 2023/07/10 15:00 | Ernesto Escobedo v Martin Damm | 7-6,6-1 |
| Challenger Chicago | 2023/07/09 15:00 | Martin Damm v Alex Bolt | 7-6,6-4 |
| ITF - M25 Santo Domingo | 2023/07/02 13:30 | Martin Damm v Liam Draxl | 7-6,6-4 |