Stadium: Court 10 Round: 25 Ground: Synthetic outdoor
| ITF China F5 | 2018/05/10 03:00 | Rigele Te v Kawakami, Rimpei | 6-4,6-2 |
| ITF China F5 | 2018/05/09 03:20 | Kawakami, Rimpei v Wang, Chuhan | 6-1,0-6,6-4 |
| ITF China F5 Qual | 2018/05/07 07:15 | Kawakami, Rimpei v Hanyi Liu | 6-2,6-0 |
| ITF China F5 Qual | 2018/05/07 03:50 | Kawakami, Rimpei v Jordan Chiu | 6-0,6-4 |
| ITF China F5 Qual | 2018/05/05 07:45 | Kawakami, Rimpei v Bakhodur, Fariduni | 6-3,6-1 |
| ITF China F4 | 2018/05/01 02:40 | Kawakami, Rimpei v Sadler, Olly | 4-6,4-6 |
| ITF China F4 Qual | 2018/04/30 05:55 | Kawakami, Rimpei v Liu, Hu | 6-1,6-2 |
| ITF China F4 Qual | 2018/04/29 02:00 | Kawakami, Rimpei v Gao, Qun | 6-2,6-0 |
| ITF Japan F5 | 2018/04/04 05:35 | Kawahashi, Yuta v Ryota Tanuma | 6-3,1-6,4-6 |
| ITF Japan F5 | 2018/04/03 05:35 | Duckhee Lee v Kawahashi, Yuta | 6-7,6-7 |
| ITF Japan F5 | 2018/03/31 03:30 | Issei Okamura v Kawahashi, Yuta | 3-6,1-6 |
| ITF Japan F4 | 2018/03/27 01:00 | Kawahashi, Yuta v Shintaro Imai | 3-6,3-6 |
| ITF Japan F3 | 2018/03/18 01:00 | Masamichi Imamura v Kawahashi, Yuta | 7-5,6-2 |
| ITF Japan F3 | 2018/03/17 02:30 | Kawahashi, Yuta v Seol, Jae-Min | 6-2,6-3 |
| ITF Japan F3 | 2018/03/17 00:30 | Kawahashi, Yuta v Tanaka, Yunosuke | 6-3,6-1 |
| ITF Japan F5 | 2017/04/01 02:00 | Furuta, Ibuki v Kawahashi, Yuta | 6-2,6-4 |