Stadium: C.1 Round: 27 Ground: Synthetic outdoor
| ITF M15 Akishima | 2019/06/13 02:30 | Sho Shimabukuro v Yuta Kawahashi | 2-6,6-4,3-6 |
| ITF M15 Akishima | 2019/06/11 06:35 | Yuta Kawahashi v Kousuke Ogura | 6-0,6-0 |
| ITF M15 Karuizawa | 2019/05/29 04:00 | Yuta Kawahashi v Yuki Mochizuki | 1-6,2-6 |
| ITF M15 Tsukuba | 2019/03/26 01:00 | Ryohei Tagata v Yuta Kawahashi | 4-6,6-2,6-1 |
| ITF M15 Nishi-Tama | 2019/03/06 02:25 | Sho Katayama v Yuta Kawahashi | 6-3,6-1 |
| ITF M15 Nishi-Tama | 2019/03/05 03:00 | Sho Katayama v Yuta Kawahashi | 4-6,5-7 |
| ITF M15 Nishi-Tama | 2019/03/05 01:00 | Hayato Kudo v Yuta Kawahashi | 2-6,1-6 |
| ITF Chinese Taipei F2 | 2018/07/24 03:30 | Cheng-Yu Yu v Yuta Kawahashi | 7-6,1-6,2-6 |
| ITF M15 Akishima | 2019/06/13 03:25 | Kazuma Kawachi v Rimpei Kawakami | 6-3,6-1 |
| ITF M15 Akishima | 2019/06/11 05:30 | Kazuma Kawachi v Yuichi Ito | 6-2,6-1 |
| ITF M15 Singapore | 2019/06/06 09:00 | Dayne Kelly v Kazuma Kawachi | 6-3,6-1 |
| ITF M15 Singapore | 2019/06/05 04:20 | Shahin Khaledan v Kazuma Kawachi | 3-6,2-6 |
| ITF M15 Singapore | 2019/06/04 02:00 | Kazuma Kawachi v Digvijay Pratap Singh | 6-1,6-3 |
| ITF M15 Singapore | 2019/06/03 02:00 | Kazuma Kawachi v Timothy Lim | 6-3,6-0 |
| ITF M15 Singapore | 2019/05/31 02:00 | Maksim Tikhomirov v Kazuma Kawachi | 6-4,6-2 |
| ITF M15 Singapore | 2019/05/28 02:00 | Kazuma Kawachi v Timothy Lim | 6-0,6-1 |