Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Anseong | 2023/06/23 02:00 | Yunseong Chung v Shunsuke Mitsui | 6-1,6-1 |
| ITF M25 Anseong | 2023/06/22 02:00 | Woobin Shin v Shunsuke Mitsui | 3-6,2-6 |
| ITF M25 Anseong | 2023/06/20 02:00 | Woohyuk Sim v Shunsuke Mitsui | 0-6,2-6 |
| ITF M25 Changwon | 2023/06/13 01:00 | Shunsuke Mitsui v Yuki Mochizuki | 4-6,2-6 |
| UTR Pro Tennis Series Dallas | 2022/12/24 15:00 | Steven Forman v Shunsuke Mitsui | 6-4,4-6,3-6 |
| UTR Pro Tennis Series Dallas | 2022/12/23 21:00 | Christopher Bulus v Shunsuke Mitsui | 4-6,2-6 |
| UTR Pro Tennis Series Dallas | 2022/12/22 21:30 | Shunsuke Mitsui v Stefan Peter Hampe | 6-1,0-0 |
| UTR Pro Tennis Series Dallas | 2022/12/20 20:00 | Shunsuke Mitsui v Lui Maxted | 6-4,5-4 |
| ITF M25 Tulsa | 2023/06/21 15:40 | Jack Pinnington Jones v Colin Markes | 6-2,6-2 |
| ITF M15 San Diego | 2023/06/15 17:00 | Alexander Kotzen v Colin Markes | 6-2,6-2 |
| ITF M15 San Diego | 2023/06/14 19:15 | Jaycer Lyeons v Colin Markes | 7-6,3-6,3-6 |
| 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 |