| UTR Pro Boston | 2023/01/08 15:30 | Holden Koons v Nicolas Kotzen | 2-6,6-7 |
| UTR Pro Boston | 2023/01/07 21:44 | Drew Van Orderlain v Nicolas Kotzen | 3-6,3-5 |
| UTR Pro Boston | 2023/01/06 22:32 | Nicolas Kotzen v Muhammad Dossani | 6-2,6-1 |
| UTR Pro Boston | 2023/01/04 21:14 | Nicolas Kotzen v Isaac Gorelik | 6-4,6-4 |
| UTR Pro Boston | 2023/01/03 22:42 | Nicolas Kotzen v Christopher Bulus | 6-4,6-3 |
| UTR Pro Boston | 2023/01/02 19:30 | Theodore Truwit v Nicolas Kotzen | 1-6,6-7 |
| UTR Pro Tennis Series Atlanta | 2022/08/13 18:00 | Nicolas Kotzen v Joshua Raab | 6-1,6-5 |
| UTR Pro Tennis Series Atlanta | 2022/08/12 15:30 | Nicolas Kotzen v Tomas Rodriguez | 2-6,6-3,6-4 |