Stadium: Court 8 Round: 26 Ground: Clay
| ITF M25 Tay Ninh | 2019/10/02 03:30 | Rimpei Kawakami v Jumpei Yamasaki | 6-1,6-3 |
| ITF M15 Cairo | 2021/01/27 14:25 | Tushar Madan v Rimpei Kawakami | 0-6,2-6 |
| ITF M15 Cairo | 2021/01/26 08:00 | Seita Watanabe v Rimpei Kawakami | 3-6,2-6 |
| ITF M15 Cairo | 2021/01/25 08:00 | Alexandros Skorilas v Rimpei Kawakami | 7-6,5-7,9-11 |
| ITF M15 Cairo | 2021/01/24 07:30 | Ahmed Mounir v Rimpei Kawakami | 4-6,3-6 |
| ITF M15 Cairo | 2021/01/18 08:00 | Piotr Matuszewski v Rimpei Kawakami | 7-6,6-3 |
| ITF M15 Cairo | 2021/01/17 08:00 | Rimpei Kawakami v Taisei Ichikawa | 2-6,6-2,10-6 |
| ITF M25 Nonthaburi | 2020/01/27 02:30 | Sidharth Rawat v Rimpei Kawakami | 4-6,6-4,10-8 |
| ITF M25 Nonthaburi | 2020/01/26 02:30 | Kazuki Nishiwaki v Rimpei Kawakami | 6-7,2-6 |
| ITF M15 Cairo | 2021/01/27 11:55 | Sherif Makhlouf v Jumpei Yamasaki | 1-6,2-6 |
| ITF M15 Cairo | 2021/01/20 11:15 | Jumpei Yamasaki v Yurii Dzhavakian | 4-6,1-6 |
| Challenger Calgary | 2020/02/25 01:30 | Filip Peliwo v Jumpei Yamasaki | 6-1,7-5 |
| ITF M25 Nonthaburi | 2020/02/05 02:25 | Chien Hsun Lo v Jumpei Yamasaki | 7-6,7-5 |
| ITF M25 Nonthaburi | 2020/01/29 09:00 | Adam Pavlasek v Jumpei Yamasaki | 6-3,6-3 |
| ITF M15 Hong Kong | 2020/01/09 03:25 | Jumpei Yamasaki v Kasidit Samrej | 3-6,4-6 |
| ITF M15 Hong Kong | 2020/01/08 08:00 | Jumpei Yamasaki v Wai Yu Kai | 6-2,6-1 |
| Australian Open WC | 2019/12/04 03:35 | Jumpei Yamasaki v Tatsuma Ito | 2-6,2-6 |