Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF Japan F5 | 2017/04/01 02:00 | Furuta, Ibuki v Kawahashi, Yuta | 6-2,6-4 |
| ITF Japan F4 | 2017/03/28 03:00 | Kawahashi, Yuta v Tung-Lin Wu | 7-6,1-6,4-6 |
| ITF Japan F3 | 2017/03/18 08:00 | Masaya Kobayashi v Kawahashi, Yuta | 6-2,7-5 |
| ITF Japan F2 | 2017/03/11 03:00 | Kawahashi, Yuta v Watanuki, Keisuke | 2-6,2-6 |
| ITF Japan F1 | 2017/03/04 01:00 | Fujii, Sota v Kawahashi, Yuta | 4-6,6-3,2-6 |
| ITF Japan F6 Qual | 2016/05/29 01:00 | Kishi, Ryota v Kawahashi, Yuta | 6-2,6-4 |
| ITF Japan F5 | 2016/04/08 01:00 | Kawahashi, Yuta v Katayama, Sho | 1-6,2-6 |
| ITF Japan F5 | 2016/04/06 00:30 | Kawahashi, Yuta v Ono, Masayoshi | 6-2,6-2 |
| ITF Japan F2 | 2018/03/15 01:00 | Tanaka, Yunosuke v Hong, Seong Chan | 3-6,3-6 |
| ITF Japan F2 | 2018/03/13 04:00 | Tanaka, Yunosuke v Sakai, Yuto | 6-4,4-6,7-6 |
| ITF Japan F1 | 2018/03/04 01:00 | Fujii, Sota v Tanaka, Yunosuke | 7-6,3-6,6-2 |
| Turkey F6, Singles Qualifying | 2018/02/13 10:30 | Samper-Montana, Jordi v Tanaka, Yunosuke | 6-2,6-3 |
| Turkey F6, Singles Qualifying | 2018/02/12 09:00 | Tanaka, Yunosuke v Shohei Chikami | 6-3,6-1 |
| Turkey F6, Singles Qualifying | 2018/02/11 09:00 | Tanaka, Yunosuke v Zick, Charly | 6-2,6-2 |
| Turkey F6, Singles Qualifying | 2018/02/10 06:00 | Elia, Alon v Tanaka, Yunosuke | 4-6,1-6 |
| ITF Hong Kong F6 | 2018/01/02 02:00 | Tanaka, Yunosuke v Murray, Jack | 3-6,3-6 |