Estádio: Court 4 Round: 26 Ground: Clay
| 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 |
| ITF - M25 Calabasas | 2023/03/23 18:00 | Alex Michelsen v Colin Markes | 6-3,6-2 |
| ITF - M25 Bakersfield | 2023/03/16 20:15 | Colin Markes v Naoki Nakagawa | 2-6,2-6 |
| ITF - M25 Bakersfield | 2023/03/16 01:30 | Miles Jones v Colin Markes | 6-4,5-7,3-6 |
| ITF - M15 Orange Park | 2023/05/03 14:50 | Rei Sakamoto v Bruno Kuzuhara | 7-6,4-6,6-3 |
| ITF - M15 Antália | 2023/04/05 11:40 | Rei Sakamoto v Dominik Kellovsky | 5-7,0-6 |
| ITF - M15 Antália | 2023/03/30 08:00 | Rei Sakamoto v Sidane Pontjodikromo | 7-5,4-6,1-6 |
| ITF - M15 Antália | 2023/03/29 11:10 | Bruno Kuzuhara v Rei Sakamoto | 6-4,3-6,4-6 |
| ITF - M15 Naples | 2023/02/24 15:00 | Rei Sakamoto v Gabi Adrian Boitan | 3-6,2-6 |
| ITF - M15 Naples | 2023/02/23 15:00 | Alvaro G Meza v Rei Sakamoto | 6-4,5-7,3-6 |
| ITF - M15 Naples | 2023/02/21 16:30 | Rei Sakamoto v ZhengQing Ji | 7-6,7-5 |
| ITF - M15 Palm Coast | 2023/02/09 18:00 | Toby Alex Kodat v Rei Sakamoto | 6-2,6-3 |