Stadium: Stadium Round: 14 Ground: Hardcourt outdoor
| ITF USA F22 | 2018/08/08 18:35 | Strong Kirchheimer v Colin Markes | 6-3,7-6 |
| 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 |
| ITF- M15 - Sunrise | 2023/04/11 21:00 | Aidan Kim v Colin Markes | 6-3,7-6 |
| Challenger - San Luis Potosi | 2023/04/02 22:35 | Colin Markes v Ajeet Rai | 6-4,3-6,0-6 |
| Challenger - Savannah | 2023/04/24 22:10 | Strong Kirchheimer v Nicolas Kicker | 1-6,1-6 |
| Challenger - Tallahassee | 2023/04/18 19:55 | Strong Kirchheimer v Mitchell Krueger | 7-6,2-6,3-6 |
| Challenger - Tallahassee | 2023/04/17 14:00 | Strong Kirchheimer v Mac Kiger | 6-3,4-6,6-2 |
| Challenger - Sarasota | 2023/04/10 00:35 | Luca Potenza v Strong Kirchheimer | 7-6,6-3 |
| Challenger - Mexico City | 2023/03/26 17:50 | Elmar Ejupovic v Strong Kirchheimer | 6-2,6-3 |
| ITF - M25 Montreal | 2023/03/18 15:00 | Gabriel Diallo v Strong Kirchheimer | 6-2,7-6 |
| ITF - M25 Montreal | 2023/03/17 13:55 | Strong Kirchheimer v Alfredo Perez | 7-6,6-3 |
| ITF - M25 Montreal | 2023/03/16 17:10 | Strong Kirchheimer v James Davis | 6-1,6-3 |