Stadium: Court 2 Round: 26 Ground: Clay
| ITF Japan F5 | 2018/04/03 05:35 | Duckhee Lee v Yuta Kawahashi | 6-7,6-7 |
| ITF Japan F5 | 2018/03/31 03:30 | Issei Okamura v Yuta Kawahashi | 3-6,1-6 |
| 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 F5 | 2018/04/03 01:00 | Rigele Te v Ryota Tanuma | 6-2,1-6,2-6 |
| ITF Japan F4 | 2018/03/31 02:30 | Yosuke Watanuki v Ryota Tanuma | 6-4,6-3 |
| ITF Japan F4 | 2018/03/30 01:00 | Ryota Tanuma v Hiroyasu Ehara | 6-3,4-6,6-4 |
| ITF Japan F4 | 2018/03/29 01:00 | Sora Fukuda v Ryota Tanuma | 7-6,1-6,4-6 |
| ITF Japan F4 | 2018/03/28 01:00 | Ryota Tanuma v Rigele Te | 7-5,6-4 |
| ITF Japan F4 | 2018/03/26 01:00 | Ryota Tanuma v Yuki Matsuo | 6-2,6-1 |
| ITF Japan F4 | 2018/03/25 01:00 | Ryota Tanuma v Wei-De Lin | 6-1,7-6 |
| ITF Japan F4 | 2018/03/24 00:00 | Ryota Tanuma v Kazuki Shimizu | 6-2,6-1 |