Stadium: Court 9 Round: 26 Ground: Clay
| ITF M15 Karuizawa | 2023/05/31 04:15 | Jesse Delaney v Preston Brown | 2-6,2-6 |
| ITF M15 Tabasco | 2023/05/24 18:05 | Preston Brown v Ezekiel Clark | 6-3,3-6,0-6 |
| ITF M15 Tabasco | 2023/05/23 16:00 | Tobias Sonne v Preston Brown | 1-6,1-6 |
| ITF M25 Xalapa | 2023/05/16 19:30 | Preston Brown v Eugenio G Fitzmaurice | 6-1,6-7,3-6 |
| Challenger Coquimbo | 2023/04/30 17:30 | Arklon H D Pino v Preston Brown | 6-2,6-2 |
| Challenger Savannah | 2023/04/23 18:50 | Colin Sinclair v Preston Brown | 5-7,7-5,6-2 |
| ITF M25 Sharm El Sheikh | 2023/04/12 10:15 | Zura Tkemaladze v Preston Brown | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2023/04/05 08:30 | Gabriele Bosio v Preston Brown | 6-3,4-6,7-5 |
| ITF M15 Karuizawa | 2023/05/31 03:35 | Seon Yong Han v Tatsuma Ito | 6-7,3-6 |
| Challenger Busan | 2023/05/08 03:40 | Yuki Mochizuki v Tatsuma Ito | 6-4,4-6,6-2 |
| Challenger Busan | 2023/05/07 02:30 | Tatsuma Ito v Mukund Sasikumar | 5-7,6-4,6-4 |
| Challenger Gwangju | 2023/05/01 01:30 | Tatsuma Ito v Peter Gojowczyk | 4-6,4-6 |
| Challenger Gwangju | 2023/04/30 02:35 | Edan Leshem v Tatsuma Ito | 1-6,4-6 |
| Challenger Seoul | 2023/04/26 04:55 | Seong Chan Hong v Tatsuma Ito | 6-3,6-2 |
| Challenger Seoul | 2023/04/24 03:45 | Omar Jasika v Tatsuma Ito | 6-1,2-6,2-6 |
| Challenger Seoul | 2023/04/23 05:30 | Tatsuma Ito v Dominik Palan | 6-4,6-2 |