| UTR Pro Tennis Series Bukarest | 2021/05/18 10:00 | Colin Sinclair v Tomas Lipovsek Puches | 6-2,5-1 |
| UTR Pro Tennis Series Bukarest | 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 |
| UTR Pro Tennis Series Bukarest | 2021/05/17 14:45 | Simon Beaupain v Juan Ignacio Galarza | 4-6,4-6 |
| ITF M15 Troisdorf | 2021/05/12 11:10 | Timo Stodder v Juan Ignacio Galarza | 6-1,5-7,6-2 |
| ITF M15 Cairo | 2021/05/05 08:00 | Juan Pablo Paz v Juan Ignacio Galarza | 6-4,6-2 |
| ITF M15 Cairo | 2021/04/29 08:00 | Oliver Crawford v Juan Ignacio Galarza | 6-1,6-4 |
| ITF M15 Cairo | 2021/04/28 08:00 | Kai Wehnelt v Juan Ignacio Galarza | 6-7,6-4,6-7 |
| ITF M15 Cairo | 2021/04/23 09:00 | Daniele Capecchi v Juan Ignacio Galarza | 6-2,6-2 |
| ITF M15 Cairo | 2021/04/22 08:00 | Juan Ignacio Galarza v Miljan Zekic | 7-6,6-0 |
| ITF M15 Cairo | 2021/04/21 14:45 | Juan Ignacio Galarza v Kai Wehnelt | 6-3,6-3 |