Ground: Hardcourt outdoor
| ITF Japan F2 | 2015/03/15 01:00 | Masaki Sasai v Issei Okamura | 6-3,6-0 |
| ITF Japan F1 | 2015/03/12 01:00 | Takuto Niki v Masaki Sasai | 6-2,6-1 |
| ITF Japan F1 | 2015/03/10 01:00 | Masaki Sasai v Soichiro Moritani | 6-1,7-5 |
| ITF Japan F8 | 2014/06/26 04:35 | Masaki Sasai v Keisuke Watanuki | 3-6,1-6 |
| ITF Japan F8 | 2014/06/25 01:00 | Takuto Niki v Masaki Sasai | 3-6,1-6 |
| ITF Japan F8 | 2014/06/22 03:00 | Masaki Sasai v Tetsuro Habusawa | 6-1,6-0 |
| ITF Japan F7 | 2014/06/19 01:00 | Ben Mclachlan v Masaki Sasai | 6-3,6-4 |
| ITF Japan F7 | 2014/06/17 01:00 | Masaki Sasai v Soichiro Moritani | 6-1,1-6,6-4 |
| ITF Japan F1 | 2015/03/12 01:00 | Arata Onozawa v Ken Onishi | 3-6,6-1,5-7 |
| ITF Japan F1 | 2015/03/10 01:00 | Arata Onozawa v Taiki Hashimoto | 6-2,6-1 |
| ITF Turkey F2 | 2015/01/17 07:00 | Arata Onozawa v Alexey Vatutin | 2-6,2-6 |
| ITF Turkey F2 | 2015/01/15 12:55 | Miki Jankovic v Arata Onozawa | 4-6,7-6,0-6 |
| ITF Turkey F1 | 2015/01/08 08:00 | Hugo Nys v Arata Onozawa | 6-1,6-2 |
| ITF Turkey F1 | 2015/01/07 08:00 | Gleb Alekseenko v Arata Onozawa | 4-6,4-6 |
| ITF Australia F7 | 2014/10/05 23:00 | Mitchell Krueger v Arata Onozawa | 6-2,6-4 |
| ITF Australia F6 | 2014/09/29 00:30 | Daniel Hobart v Arata Onozawa | 6-7,6-4,6-4 |