Stadium: Court 2 Round: 14 Ground: Hardcourt indoor
| ITF M25 Edmonton | 2023/11/01 18:20 | Andres Martin v Alexander Kotzen | 6-0,6-3 |
| ITF M25 Saint-Augustin | 2023/10/26 16:30 | Mohamed Aziz Dougaz v Alexander Kotzen | 6-3,7-6 |
| ITF M25 Saint-Augustin | 2023/10/24 17:10 | Alexander Kotzen v Enzo Wallart | 6-3,6-4 |
| ITF M25 Southaven | 2023/08/10 22:45 | Alexander Kotzen v Martin Damm | 3-6,6-3,3-6 |
| ITF M25 Southaven | 2023/08/09 21:35 | Ishaan Ravichander v Alexander Kotzen | 6-7,1-6 |
| ITF M25 Decatur | 2023/08/03 19:20 | Alexander Kotzen v Jonah Braswell | 2-6,6-0,6-7 |
| ITF M25 Decatur | 2023/08/02 22:15 | Jacob Brumm v Alexander Kotzen | 3-6,1-6 |
| ITF M15 Pittsburgh | 2023/07/27 15:00 | Alexander Kotzen v Bruno Kuzuhara | 6-4,6-7,2-6 |
| Challenger Hamburg | 2023/10/15 08:00 | Gabi Adrian Boitan v Javier Barranco Cosano | 4-6,6-7 |
| Challenger Bratislava | 2023/10/10 09:00 | Andrew Paulson v Gabi Adrian Boitan | 6-4,6-3 |
| Challenger Bratislava | 2023/10/09 08:30 | Cem Ilkel v Gabi Adrian Boitan | 2-6,1-6 |
| Challenger Bratislava | 2023/10/08 09:00 | Gabi Adrian Boitan v Marius Copil | 3-6,6-4,7-6 |
| Challenger Sibiu | 2023/09/18 09:20 | Calvin Hemery v Gabi Adrian Boitan | 2-6,7-5,6-3 |
| Challenger Sibiu | 2023/09/17 10:30 | Ryuki Matsuda v Gabi Adrian Boitan | 3-6,1-6 |
| ITF M15 Bucharest | 2023/09/02 08:00 | Juan Pablo Paz v Gabi Adrian Boitan | 3-6,6-3,6-1 |
| ITF M15 Bucharest | 2023/09/01 10:55 | Jesse Flores v Gabi Adrian Boitan | 6-7,3-6 |