Stadium: Court 4 Round: 25 Ground: Hardcourt indoor
| ITF M15 Ithaca | 2021/10/05 16:00 | Taha Baadi v Colin Sinclair | 7-6,7-5 |
| 'ITF M25 Boedapest | 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 |
| UTR Pro Tennis Series - Mulheim | 2021/09/22 14:00 | Colin Sinclair v Christos Keisidis | 6-3,6-1 |
| UTR Pro Tennis Series - Mulheim | 2021/09/21 08:00 | Colin Sinclair v Artem Podorozhnyi | 5-7,4-6 |
| UTR Pro Tennis Series - Mulheim | 2021/09/20 09:30 | Colin Sinclair v Edison Ambarzumjan | 7-5,5-4 |
| ITF M15 Ithaca | 2021/10/06 18:35 | Roy Smith v Ryan Shane | 5-7,3-6 |
| ITF M15 Lubbock | 2021/09/30 15:00 | Ryan Shane v Charles Broom | 6-7,3-6 |
| ITF - M15 Fayetteville | 2021/09/22 21:25 | Mark Whitehouse v Ryan Shane | 6-1,6-0 |
| ITF - M15 Champaign | 2021/09/15 19:40 | Ryan Shane v Nathan Ponwith | 5-7,2-6 |
| ITF M25 Champaign | 2021/07/27 15:00 | Ryan Shane v Lucas Horve | 6-3,4-6,4-10 |
| ITF M25 Champaign | 2021/07/26 15:00 | Ryan Shane v Alexander Petrov | 6-4,6-2 |
| ITF M15 - Edwardsville | 2021/07/21 19:20 | Dusty H. Boyer v Ryan Shane | 6-3,6-1 |
| ITF M15 - Edwardsville | 2021/07/20 15:30 | Ryan Shane v Toby D. Boyer | 6-2,6-7,10-7 |