Stadium: Court 1 Round: 44 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/17 04:00 | Shinji Hazawa v Naoya Maesaki | 4-6,6-2,6-1 |
| ITF Japan F1 | 2018/03/08 05:35 | Shinji Hazawa v Soichiro Moritani | 6-7,2-6 |
| ITF Japan F1 | 2018/03/07 04:45 | Issei Okamura v Shinji Hazawa | 6-3,1-6,3-6 |
| ITF Japan F1 | 2018/03/05 01:00 | Shinji Hazawa v Masamichi Imamura | 4-6,7-5,6-4 |
| Challenger Yokohama | 2018/03/01 02:00 | Yasutaka Uchiyama v Shinji Hazawa | 6-3,7-5 |
| Challenger Yokohama | 2018/02/27 01:00 | Shinji Hazawa v Soonwoo Kwon | 6-3,4-6,7-6 |
| ITF China F1 | 2018/01/13 04:25 | Huixin Wang v Shinji Hazawa | 3-6,6-0,6-2 |
| ITF China F1 | 2018/01/11 02:30 | Seong-Gook Oh v Shinji Hazawa | 3-6,4-6 |
| ITF Japan F3 | 2018/03/17 04:00 | Rimpei Kawakami v Naru Shirafuji | 6-3,6-2 |
| ITF Japan F3 | 2018/03/17 00:30 | Tomohiro Masabayashi v Rimpei Kawakami | 2-6,4-6 |
| ITF Japan F2 | 2018/03/13 00:30 | Issei Okamura v Rimpei Kawakami | 6-2,6-4 |
| ITF Turkey F4 | 2018/01/29 08:00 | Vladislav Melnic v Rimpei Kawakami | 7-5,6-3 |
| ITF Turkey F3 | 2018/01/23 11:30 | Fran Zvonimir Zgombic v Rimpei Kawakami | 6-4,6-1 |
| ITF Turkey F3 | 2018/01/22 10:00 | Rimpei Kawakami v Vadim Alekseenko | 6-2,6-1 |
| ITF Turkey F3 | 2018/01/20 07:00 | Igor Solomatin v Rimpei Kawakami | 0-6,1-6 |
| ITF Turkey F2 | 2018/01/15 07:00 | Rimpei Kawakami v Calin Manda | 6-7,6-2,1-6 |