| Challenger Little Rock | 2023/05/29 15:00 | Beibit Zhukayev v Colin Markes | 6-0,6-3 |
| Challenger Little Rock | 2023/05/28 17:35 | Colin Markes v Strong Kirchheimer | 5-7,7-6,7-6 |
| ITF M25 Pensacola | 2023/05/17 15:40 | Colin Markes v Jonah Braswell | 2-6,1-6 |
| ITF M15 Orange Park | 2023/05/05 18:10 | Matias Franco Descotte v Colin Markes | 6-4,6-7,6-0 |
| ITF M15 Orange Park | 2023/05/04 14:15 | Colin Markes v Rei Sakamoto | 5-7,6-4,6-2 |
| ITF M15 Orange Park | 2023/05/03 16:35 | Oren Vasser v Colin Markes | 2-6,1-6 |
| ITF M15 Vero Beach | 2023/04/27 14:40 | Jacob Brumm v Colin Markes | 7-6,6-1 |
| Challenger Tallahassee | 2023/04/17 15:50 | Martin Damm v Colin Markes | 6-4,6-3 |
| UTR Pro Tennis Series California | 2022/11/05 23:05 | Karl Lee v Miles Clark | 6-2,5-4 |
| UTR Pro Tennis Series California | 2022/11/03 17:00 | Miles Clark v Alessandro-D Ventre | 4-6,6-7 |
| UTR Pro Tennis Series California | 2022/11/02 22:30 | Miles Clark v Emiliano Elizarraras | 5-7,3-5 |
| UTR Pro Tennis Series California | 2022/11/01 20:00 | Miles Clark v Keenan Mayo | 1-6,2-6 |
| UTR Pro Tennis Series California | 2022/10/31 22:01 | Miles Clark v Christopher Papa | 6-4,6-4 |