Stadium: Court 1 Round: 54 Ground: Clay
| ITF Japan F4 | 2018/03/26 01:00 | Issei Okamura v Shao-Fan Liu | 3-6,5-7 |
| ITF Japan F4 | 2018/03/24 04:00 | Issei Okamura v Kousuke Ogura | 6-3,7-5 |
| ITF Japan F3 | 2018/03/19 06:40 | Issei Okamura v Makoto Ochi | 6-7,3-6 |
| ITF Japan F3 | 2018/03/18 01:30 | Issei Okamura v Masaki Sasai | 6-3,6-1 |
| ITF Japan F3 | 2018/03/17 04:00 | Issei Okamura v Arata Onozawa | 7-6,6-0 |
| ITF Japan F2 | 2018/03/15 02:35 | Issei Okamura v Kaito Uesugi | 4-6,5-7 |
| ITF Japan F2 | 2018/03/13 00:30 | Issei Okamura v Rimpei Kawakami | 6-2,6-4 |
| ITF Japan F2 | 2018/03/12 00:30 | Issei Okamura v Kaito Itsusaki | 6-4,6-1 |
| ITF Japan F4 | 2018/03/27 01:00 | Yuta Kawahashi v Shintaro Imai | 3-6,3-6 |
| ITF Japan F3 | 2018/03/18 01:00 | Masamichi Imamura v Yuta Kawahashi | 7-5,6-2 |
| ITF Japan F3 | 2018/03/17 02:30 | Yuta Kawahashi v Jae-Min Seol | 6-2,6-3 |
| ITF Japan F3 | 2018/03/17 00:30 | Yuta Kawahashi v Yunosuke Tanaka | 6-3,6-1 |
| ITF Japan F5 | 2017/04/01 02:00 | Ibuki Furuta v Yuta Kawahashi | 6-2,6-4 |
| ITF Japan F4 | 2017/03/28 03:00 | Yuta Kawahashi v Tung-Lin Wu | 7-6,1-6,4-6 |
| ITF Japan F3 | 2017/03/18 08:00 | Masaya Kobayashi v Yuta Kawahashi | 6-2,7-5 |
| ITF Japan F2 | 2017/03/11 03:00 | Yuta Kawahashi v Keisuke Watanuki | 2-6,2-6 |