| ITF M15 Yanagawa | 2023/12/18 03:00 | Tomohiro Masabayashi v Shu Muto | 1-6,7-6,7-10 |
| ITF M25 Gold Coast | 2023/11/27 00:00 | Tomohiro Masabayashi v Andre Szilvassy | 2-6,3-6 |
| ITF M25 Brisbane | 2023/11/20 04:30 | Tomohiro Masabayashi v Mason Naumovski | 6-7,6-3,5-10 |
| Challenger Shenzhen Qual | 2023/10/15 02:00 | Tao Mu v Tomohiro Masabayashi | 6-1,6-3 |
| ITF M25 Takasaki | 2023/09/17 01:00 | Tomohiro Masabayashi v Toru Horie | 1-6,3-6 |
| ITF M25 Sapporo | 2023/09/15 02:55 | Tomohiro Masabayashi v Yuki Mochizuki | 6-2,4-6,1-6 |
| 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 |