| UTR Pro Tennis Series Bucharest | 2021/05/22 11:00 | Nicolae Frunza v Yanais Laurent | 6-1,2-3 |
| UTR Pro Tennis Series Bucharest | 2021/05/21 10:00 | Nicolae Frunza v Vladimir Filip | 7-6,6-3 |
| UTR Pro Tennis Series Bucharest | 2021/05/19 07:00 | Nicolae Frunza v Vlad Andrei Dancu | 6-1,7-5 |
| UTR Pro Tennis Series Bucharest | 2021/05/18 07:00 | Nicolae Frunza v Dan Alexandru Tomescu | 3-6,6-3,3-5 |
| UTR Pro Tennis Series Bucharest | 2021/05/17 09:00 | Nicolae Frunza v Hugo Voljacques | 6-1,6-5 |
| ITF M15 Antalya | 2021/04/26 07:00 | Nicolae Frunza v Buvaysar Gadamauri | 7-6,4-6,10-8 |
| ITF M15 Antalya | 2021/04/25 07:00 | Nicolae Frunza v Biagio Gramaticopolo | 6-1,6-0 |
| ITF M15 Antalya | 2021/04/24 07:30 | Nicolae Frunza v Christopher Heyman | 3-6,3-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 12:30 | Ilya Snitari v Colin Sinclair | 6-4,6-7,6-7 |
| UTR Pro Tennis Series Bucharest | 2021/05/22 07:00 | Colin Sinclair v Simon Beaupain | 6-3,6-4 |
| UTR Pro Tennis Series Bucharest | 2021/05/19 10:00 | Colin Sinclair v Juan Ignacio Galarza | 4-6,2-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/18 10:00 | Colin Sinclair v Tomas Lipovsek Puches | 6-2,5-1 |
| UTR Pro Tennis Series Bucharest | 2021/05/17 12:30 | Nicholas David Ionel v Colin Sinclair | 6-7,4-5 |
| ITF M15 Antalya | 2021/05/10 07:00 | Colin Sinclair v Thomas Deschamps | 6-7,6-2,7-10 |
| ITF M15 Antalya | 2021/05/09 07:00 | Colin Sinclair v Farzin Danny Amiri | 6-3,6-2 |
| ITF M15 Antalya | 2021/05/07 09:40 | Colin Sinclair v Sandro Ehrat | 4-6,6-4,3-6 |