| UTR Pro Tennis Series Nevada | 2021/06/26 17:00 | Brandon Stringfellow v Nicolas Kotzen | 3-6,4-5 |
| UTR Pro Tennis Series Nevada | 2021/06/25 16:30 | Nicolas Kotzen v Joshua Charlton | 3-6,6-7 |
| UTR Pro Tennis Series Nevada | 2021/06/24 15:00 | Nicolas Kotzen v Mason Beiler | 3-6,4-5 |
| UTR Pro Tennis Series Nevada | 2021/06/23 16:30 | Aaron Bailey v Nicolas Kotzen | 6-7,2-5 |
| UTR Pro Tennis Series Nevada | 2021/06/22 16:30 | Maxwell McKennon v Nicolas Kotzen | 6-3,4-6,2-5 |
| UTR Pro Tennis Series Florida | 2021/03/14 13:00 | Nicolas Kotzen v Raphael Termat | 6-4,6-1 |
| UTR Pro Tennis Series Florida | 2021/03/12 14:00 | Nicolas Kotzen v Tristan Meraut | 2-1 |
| UTR Pro Tennis Series Florida | 2021/03/09 14:04 | Nicolas Kotzen v Giulio Perego | 5-7,4-6 |