Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| Challenger Yokkaichi | 2023/11/27 04:20 | Naoki Nakagawa v Coleman Wong | 2-6,7-6,4-6 |
| Challenger Yokohama | 2023/11/24 02:00 | Yuta Shimizu v Coleman Wong | 7-6,6-7,7-6 |
| Challenger Yokohama | 2023/11/20 05:20 | Altug Celikbilek v Coleman Wong | 6-2,3-6,2-6 |
| Challenger Sydney | 2023/11/02 03:55 | Coleman Wong v Rinky Hijikata | 6-4,3-6,2-6 |
| Challenger Sydney | 2023/10/31 04:10 | Pavle Marinkov v Coleman Wong | 6-7,2-6 |
| Challenger Playford | 2023/10/29 00:30 | Coleman Wong v James Duckworth | 5-7,5-7 |
| Challenger Playford | 2023/10/28 04:35 | Coleman Wong v Taro Daniel | 4-6,7-6,7-5 |
| Challenger Playford | 2023/10/27 00:30 | Coleman Wong v Tristan Schoolkate | 6-7,7-6,7-6 |
| Challenger Yokkaichi | 2023/11/28 01:00 | Rei Sakamoto v Jurij Rodionov | 6-4,6-4 |
| Challenger Yokohama | 2023/11/21 04:40 | Rei Sakamoto v Li Tu | 4-6,3-6 |
| Challenger Kobe | 2023/11/12 02:40 | Yasutaka Uchiyama v Rei Sakamoto | 6-1,6-2 |
| ITF M15 - Tallahassee | 2023/10/26 17:45 | Rei Sakamoto v Etienne Donnet | 2-6,2-6 |
| ITF M15 - Tallahassee | 2023/10/25 20:10 | Rei Sakamoto v Mwendwa Mbithi | 6-3,6-2 |
| ITF M15 - Albuquerque | 2023/09/27 21:30 | Rei Sakamoto v Adam Neff | 4-6,2-6 |
| 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 14:50 | Rei Sakamoto v Bruno Kuzuhara | 7-6,4-6,6-3 |