| 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 |
| ITF M15 Antalya | 2021/05/06 11:05 | Timofey Skatov v Colin Sinclair | 6-3,4-6,1-6 |
| ITF M15 Antalya | 2021/05/05 06:50 | Colin Sinclair v Oleksii Krutykh | 6-1,6-2 |
| ITF M15 Antalya | 2021/05/04 07:00 | Buvaysar Gadamauri v Colin Sinclair | 6-7,5-7 |
| ITF M15 Antalya | 2021/05/03 07:00 | Dax Donders v Colin Sinclair | 6-1,3-6,4-10 |
| ITF M15 Troisdorf | 2021/05/11 12:35 | Tomas Lipovsek Puches v Kai Wehnelt | 1-6,7-6,3-6 |
| Challenger Rome Qual | 2021/04/25 08:00 | Tristan Lamasine v Tomas Lipovsek Puches | 6-2,6-3 |
| ITF M15 Villa Maria | 2021/04/01 13:00 | Tomas Lipovsek Puches v Hernan Casanova | 1-6,5-7 |
| ITF M15 Villa Maria | 2021/03/30 16:15 | Roman Andres Burruchaga v Tomas Lipovsek Puches | 6-7,1-6 |
| ITF M15 Monastir | 2021/03/16 08:30 | Tomas Lipovsek Puches v Renta Tokuda | 4-6,0-6 |
| ITF M15 Monastir | 2021/03/09 08:30 | Tomas Lipovsek Puches v Naoki Nakagawa | 2-6,2-6 |
| ITF M25 Faro | 2021/03/05 10:45 | Alen Avidzba v Tomas Lipovsek Puches | 6-3,6-1 |
| ITF M25 Faro | 2021/03/04 11:20 | Sebastian Fanselow v Tomas Lipovsek Puches | 3-6,6-3,6-7 |