| 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 |
| ITF - M15 Austin | 2019/11/18 16:00 | Colin Markes v Eduardo N Irizarry | 6-4,6-1 |
| ITF - M15 Monastir | 2021/06/28 13:00 | Perry Gregg v Keenan Mayo | 6-3,6-7,10-6 |
| ITF - M15 Monastir | 2021/06/28 08:00 | Younes Lalami Laaroussi v Keenan Mayo | 4-6,3-6 |
| ITF - M15 Monastir | 2021/06/27 10:30 | Zakai Stone v Keenan Mayo | 3-6,2-6 |
| ITF - M15 Monastir | 2021/06/20 12:00 | Keenan Mayo v Julian Cash | 2-6,7-6,6-10 |
| ITF - M15 Monastir | 2021/06/16 08:30 | Alexander Kotzen v Keenan Mayo | 6-2,7-5 |
| ITF - M15 Monastir | 2021/06/14 13:30 | Luis Faria v Keenan Mayo | 6-7,6-3,7-10 |
| ITF - M15 Monastir | 2021/06/14 09:00 | Keenan Mayo v Vladislav Ivanov | 6-4,6-4 |
| ITF - M15 Monastir | 2021/06/13 08:00 | Rafael Giotis v Keenan Mayo | 4-6,0-6 |