Stadium: Holloway Round: 26 Ground: Hardcourt outdoor
| ITF - M25 East Lansing | 2022/06/07 18:30 | Colin Markes v Naoki Nakagawa | 3-6,2-6 |
| ITF M25 - Bakersfield | 2023/03/16 01:30 | Miles Jones v Colin Markes | 6-4,5-7,3-6 |
| ITF - M15 Monastir | 2023/02/11 10:30 | Nicolas Tepmahc v Colin Markes | 6-3,6-3 |
| ITF - M15 Monastir | 2023/02/07 12:30 | Stefanos Sakellaridis v Colin Markes | 5-7,6-2,6-7 |
| ITF - M25 Monastir | 2023/02/02 11:45 | Fajing Sun v Colin Markes | 6-2,6-2 |
| ITF - M25 Monastir | 2023/01/31 10:55 | Colin Markes v Luca Potenza | 2-6,6-4,6-2 |
| ITF - M15 Monastir | 2023/01/27 08:30 | Colin Markes v Stefanos Sakellaridis | 1-6,6-4,4-6 |
| ITF - M15 Monastir | 2023/01/26 08:30 | Colin Markes v John Echeverria | 7-6,7-5 |
| ITF - M15 Monastir | 2023/01/25 12:20 | Skander Mansouri v Colin Markes | 6-7,6-7 |
| ITF M25 - Bakersfield | 2023/03/16 02:00 | Connor Farren v Naoki Nakagawa | 3-6,6-7 |
| ITF M25 - Quinta Do Lago | 2023/03/12 14:00 | Jesper De Jong v Naoki Nakagawa | 6-1,5-7,6-4 |
| ITF M25 - Quinta Do Lago | 2023/03/11 14:00 | Naoki Nakagawa v Henrique Rocha | 7-6,6-4 |
| ITF M25 - Quinta Do Lago | 2023/03/11 10:00 | Naoki Nakagawa v Filip Peliwo | 6-4,7-6 |
| ITF M25 - Quinta Do Lago | 2023/03/10 13:05 | Tomas C Abasolo v Naoki Nakagawa | 5-7,4-6 |
| ITF M25 - Quinta Do Lago | 2023/03/09 17:40 | Akira Santillan v Naoki Nakagawa | 4-6,2-6 |
| ITF M25 Loule | 2023/03/02 10:30 | Jesper De Jong v Naoki Nakagawa | 6-3,6-2 |
| ITF M25 Loule | 2023/03/01 15:15 | Naoki Nakagawa v Henrique Rocha | 6-4,6-4 |