Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M15 Ithaca | 2021/11/02 14:30 | Jonathan Sorbo v Michael Zheng | 2-6,6-3,6-10 |
| ITF M15 Tallahassee | 2021/10/26 13:00 | Michael Zheng v Matt Kuhar | 2-6,7-6,3-10 |
| ITF M15 Tallahassee | 2021/10/25 13:00 | Yasha Zemel v Michael Zheng | 3-6,4-6 |
| ITF M15 Vero Beach | 2021/10/21 17:00 | Michael Zheng v Ezekiel Clark | 2-6,4-6 |
| ITF M15 Vero Beach | 2021/10/20 16:00 | Michael Zheng v Reece Falck | 7-5,6-1 |
| ITF M15 Weston | 2021/07/02 14:45 | Federico Agustin Gomez v Michael Zheng | 6-4,6-4 |
| ITF M25 Weston | 2021/06/29 22:45 | Michael Zheng v Cleeve Harper | 6-3,6-3 |
| ITF M25 Weston | 2021/06/29 20:45 | Garrett Johns v Michael Zheng | 4-6,6-3,8-10 |
| 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 |
| 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 |