Stadium: Center A Round: 26 Ground: Hardcourt outdoor
| ITF M25 Jakarta | 2023/04/19 02:30 | Yuki Mochizuki v Tomohiro Masabayashi | 6-2,2-6,4-6 |
| ITF M25 Sapporo | 2023/09/12 03:45 | Keisuke Saitoh v Tomohiro Masabayashi | 5-7,3-6 |
| ITF M25 Sapporo | 2023/09/11 03:15 | Tomohiro Masabayashi v Omar Fields | 7-5,2-6,10-7 |
| ITF M25 Sapporo | 2023/09/07 01:00 | Tomohiro Masabayashi v Daisuke Sumizawa | 3-6,3-6 |
| ITF M25 Sapporo | 2023/09/06 01:00 | Keisuke Saitoh v Tomohiro Masabayashi | 4-6,6-3,1-6 |
| ITF M25 Sapporo | 2023/09/04 01:00 | Tomohiro Masabayashi v Chih Chi Huang | 6-3,6-3 |
| ITF M25 Tainan | 2023/08/24 02:00 | Ergi Kirkin v Tomohiro Masabayashi | 6-4,6-3 |
| ITF M25 Tainan | 2023/08/23 04:55 | Chien Hsun Lo v Tomohiro Masabayashi | 7-5,5-7,3-6 |
| ITF M25 Tainan | 2023/08/17 02:00 | Tomohiro Masabayashi v Makoto Ochi | 6-7,1-6 |
| ITF M25 Sapporo | 2023/09/13 03:05 | Collin Altamirano v Yuki Mochizuki | 6-7,4-6 |
| Challenger Cary | 2023/08/08 22:15 | Tung-Lin Wu v Yuki Mochizuki | 4-6,6-3,6-2 |
| Challenger Cary | 2023/08/07 16:00 | Stefan Dostanic v Yuki Mochizuki | 3-6,6-3,6-1 |
| Challenger Cary | 2023/08/06 16:55 | Evan King v Yuki Mochizuki | 6-7,5-7 |
| Challenger Lexington | 2023/08/01 20:20 | Cannon Kingsley v Yuki Mochizuki | 6-4,4-6,6-3 |
| Challenger Lexington | 2023/07/31 15:40 | Yuki Mochizuki v Makoto Ochi | 6-4,6-2 |
| Challenger Lexington | 2023/07/30 17:40 | Yuki Mochizuki v Andre Ilagan | 6-4,7-6 |
| ITF M25 Edwardsville | 2023/07/28 00:00 | Yuki Mochizuki v Vito Tonejc | 7-6,4-6,2-6 |