Estadio: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF Japón F6 | 2018/04/13 03:40 | Rimpei Kawakami v Kazuki Nishiwaki | 4-6,2-6 |
| Challenger de Kobe | 2019/11/04 08:30 | Kazuki Nishiwaki v Yosuke Watanuki | 3-6,4-6 |
| Challenger de Kobe | 2019/11/04 01:30 | Kazuki Nishiwaki v Timur Khabibulin | 3-6,1-6 |
| ITF M25 Tay Ninh | 2019/10/10 05:00 | Billy Harris v Kazuki Nishiwaki | 6-4,6-4 |
| ITF M25 Tay Ninh | 2019/10/09 03:30 | Kazuki Nishiwaki v Tsung-Hua Yang | 2-6,6-4,6-4 |
| ITF M25 Tay Ninh | 2019/10/05 09:00 | Kazuki Nishiwaki v Daniel Nguyen | 2-6,3-6 |
| ITF M25 Tay Ninh | 2019/10/04 08:00 | Yusuke Takahashi v Kazuki Nishiwaki | 0-6,6-3,2-6 |
| ITF M25 Tay Ninh | 2019/10/03 02:00 | Kazuki Nishiwaki v Shao-Fan Liu | 4-6,6-2,6-3 |
| ITF M25 Tay Ninh | 2019/10/01 05:55 | Kazuki Nishiwaki v Chien Hsun Lo | 6-3,6-4 |
| ITF M15 Monastir | 2019/11/22 10:40 | Clement Geens v Rimpei Kawakami | 6-2,6-3 |
| ITF M15 Monastir | 2019/11/21 12:10 | Diego F Flores v Rimpei Kawakami | 4-6,1-6 |
| ITF M15 Monastir | 2019/11/19 08:30 | Rimpei Kawakami v Lorenzo Bocchi | 6-1,6-0 |
| ITF M15 Monastir | 2019/11/13 13:45 | Rimpei Kawakami v Ivan Davydov | 6-4,3-6,4-6 |
| ITF M15 Monastir | 2019/11/05 08:30 | Rimpei Kawakami v Gianluigi Quinzi | 2-6,2-6 |
| ITF M25 Tay Ninh | 2019/10/08 06:10 | Arjun Kadhe v Rimpei Kawakami | 4-6,6-4,7-5 |
| ITF M25 Tay Ninh | 2019/10/04 08:00 | Yan Bai v Rimpei Kawakami | 3-6,6-3,6-2 |
| ITF M25 Tay Ninh | 2019/10/03 03:50 | Arthur Weber v Rimpei Kawakami | 6-7,1-6 |