Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| UTR Pro Tennis Series - Dallas | 2021/09/05 13:00 | Tadeas Paroulek v Colin Markes | 6-3,6-2 |
| UTR Pro Tennis Series - Dallas | 2021/09/04 13:00 | Colin Markes v Kiranpal Pannu | 6-2,5-3 |
| UTR Pro Tennis Series - Dallas | 2021/09/03 13:00 | Colin Markes v Sander Jong | 1-6,6-4,2-5 |
| UTR Pro Tennis Series - Dallas | 2021/09/01 13:00 | Colin Markes v Stefan Latinov | 6-2,6-3 |
| UTR Pro Tennis Series - Dallas | 2021/08/31 15:00 | Colin Markes v Jerry Barton | 6-3,6-1 |
| UTR Pro Tennis Series - Dallas | 2021/08/30 16:00 | Jacob Brumm v Colin Markes | 1-6,5-7 |
| UTR Pro Tennis Series - Kalifornia | 2021/08/28 16:30 | Colin Markes v Lucas Gomez | 6-2,4-6,3-6 |
| UTR Pro Tennis Series - Kalifornia | 2021/08/27 21:00 | Ryan Seggerman v Colin Markes | 2-6,6-7 |
| ITF - Heraklion M15 | 2021/06/06 09:00 | Austin Ansari v Enzo Frances Tessari | 6-0,6-2 |
| ITF - Marbella M15 | 2021/05/26 07:30 | Fouad Behbehani v Enzo Frances Tessari | 6-3,6-3 |
| ITF - Majadahonda M15 | 2021/05/02 16:15 | Rishab Agarwal v Enzo Frances Tessari | 7-6,6-2 |
| ITF - Vale Do Lobo M25 | 2021/03/07 14:00 | Hugo Pontico v Enzo Frances Tessari | 6-1,6-1 |