| UTR Pro Tennis Series - Kalifornien | 2021/08/22 16:30 | Colin Markes v Keenan Mayo | 6-1,0-6,5-4 |
| UTR Pro Tennis Series - Dallas | 2021/08/12 15:30 | Colin Markes v Peter Murphy | 5-7,5-7 |
| UTR Pro Tennis Series - Dallas | 2021/08/11 13:00 | Colin Markes v Ryuhei Azuma | 2-6,1-6 |
| UTR Pro Tennis Series - Dallas | 2021/08/10 16:00 | Colin Markes v Stefan Storch | 7-6,6-3 |
| UTR Pro Tennis Series - Dallas | 2021/08/08 21:37 | Colin Markes v Juan Carlos Aguilar | 3-6,5-6 |
| UTR Pro Tennis Series - Dallas | 2021/08/08 16:00 | Robert Cash v Colin Markes | 6-3,6-1 |
| ITF - M15 - Austin | 2019/11/20 19:20 | Colin Markes v Tyler Zink | 6-7,6-7 |
| ITF - M15 - Austin | 2019/11/19 16:00 | Colin Markes v Eric Morris | 6-3,6-3 |
| UTR Pro Tennis Series - Kalifornien | 2021/08/22 16:30 | Alfredo Perez v Warren Wood | 6-3,6-4 |