Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Ithaca | 2021/11/04 16:45 | Colin Sinclair v Vasil Kirkov | 3-6,4-6 |
| ITF M15 Ithaca | 2021/11/03 17:55 | Michael Zheng v Colin Sinclair | 0-6,2-6 |
| ITF M15 Tallahassee | 2021/10/27 14:00 | Colin Sinclair v Ryan Shane | 6-3,3-6,6-7 |
| ITF M15 Ithaca | 2021/10/05 16:00 | Taha Baadi v Colin Sinclair | 7-6,7-5 |
| ITF M25 Budapest | 2021/09/28 10:45 | Pawel Juszczak v Colin Sinclair | 6-2,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 13:30 | Colin Sinclair v Guy Den Heijer | 2-6,3-5 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 10:00 | Colin Sinclair v Jing L Weng | 6-1,6-4 |
| UTR Pro Tennis Series Mulheim | 2021/09/23 11:00 | Colin Sinclair v Jurriaan Bol | 6-3,6-3 |
| ITF M15 Antalya | 2021/11/08 12:50 | Luca Fantini v Admir Kalender | 1-6,6-3,8-10 |
| ITF M15 Antalya | 2021/11/07 06:30 | Liam Delicata v Luca Fantini | 7-6,2-6,3-10 |
| ITF M15 Antalya | 2021/11/03 06:00 | Pavel Verbin v Luca Fantini | 6-4,4-6,11-9 |
| ITF M15 Antalya | 2021/11/02 12:20 | Luca Fantini v Maik Steiner | 4-6,6-2,10-8 |
| ITF M15 Cairo | 2021/07/25 08:00 | Luca Fantini v Sherif Makhlouf | 7-6,1-6,5-10 |
| ITF M15 Cairo | 2021/07/20 08:00 | Felipe Derdoy v Luca Fantini | 7-5,6-2 |
| ITF M15 Cairo | 2021/07/19 08:30 | Luca Fantini v Sami Ben Abdennibi | 2-6,6-4,12-10 |
| ITF M15 Cairo | 2021/07/18 09:30 | Karim El Feky v Luca Fantini | 6-7,4-6 |