| ITF Korea F3 | 06/22 04:55 | 27 | Soonwoo Kwon v Jumpei Yamasaki | 6-3,6-1 | |
| ITF Korea F3 | 06/21 02:50 | 26 | Kim, Young Seok v Jumpei Yamasaki | 6-7,4-6 | |
| ITF Korea F3 | 06/19 08:10 | 25 | Shin, Seung-Hun v Jumpei Yamasaki | 6-4,2-6,1-6 | |
| ITF Korea F2 | 06/14 01:00 | 26 | Moon, Ju-Hae v Jumpei Yamasaki | 6-4,7-5 | |
| ITF Korea F2 | 06/12 01:00 | 25 | Lee, Tae-Woo v Jumpei Yamasaki | 3-6,0-6 | |
| ITF Japan F7 | 06/08 01:00 | 27 | Rio Noguchi v Jumpei Yamasaki | 6-2,6-0 | |
| ITF Japan F7 | 06/07 04:50 | 26 | Itsusaki, Kaito v Jumpei Yamasaki | 3-6,4-6 | |
| ITF Japan F7 | 06/04 03:10 | 25 | Shimizu, Kazuki v Jumpei Yamasaki | 2-6,4-6 | |
| ITF China F6 | 05/16 02:00 | 26 | Jumpei Yamasaki v Takeuchi, Kento (1987) | 4-6,6-4,6-7 | |
| ITF China F6 | 05/14 05:45 | 25 | Wang, Huixin v Jumpei Yamasaki | 3-6,3-6 | |
| ITF China F5 | 05/12 03:00 | 28 | Jumpei Yamasaki v Rigele Te | 3-6,6-7 | |
| ITF China F5 | 05/11 06:05 | 27 | Jumpei Yamasaki v Kuan-Yi Lee | 6-4,6-4 | |
| ITF China F5 | 05/10 03:00 | 26 | Kim, Cheong-Eui v Jumpei Yamasaki | 2-6,5-7 | |
| ITF China F5 | 05/09 02:00 | 25 | Zou, Weibowen v Jumpei Yamasaki | 0-6,0-6 | |
| ITF Vietnam F1 | 05/03 03:00 | 27 | Chun Hsin Tseng v Jumpei Yamasaki | 6-2,6-3 | |
| ITF Vietnam F1 | 05/02 03:00 | 26 | Niki Kaliyanda Poonacha v Jumpei Yamasaki | 4-6,6-3,1-6 | |
| ITF Vietnam F1 | 04/30 06:15 | 25 | Barki, Justin v Jumpei Yamasaki | 4-6,4-6 | |
| ITF Japan F6 | 04/13 03:15 | 27 | Renta Tokuda v Jumpei Yamasaki | 4-6,6-2,6-4 | |
| ITF Japan F6 | 04/12 01:00 | 26 | Jumpei Yamasaki v Gao, Xin | 3-6,7-6,6-4 | |
| ITF Japan F6 | 04/10 01:00 | 25 | Jumpei Yamasaki v Kibi, Yuya | 7-6,6-1 | |
| ITF Japan F5 | 04/04 01:00 | 26 | Shintaro Imai v Jumpei Yamasaki | 6-3,6-4 | |
| ITF Japan F5 | 04/02 02:20 | 25 | Jumpei Yamasaki v Moritani, Soichiro | 6-1,6-3 | |
| ITF Japan F4 | 03/28 01:00 | 25 | Jumpei Yamasaki v Makoto Ochi | 1-6,2-6 | |
| ITF Japan F4 | 03/26 01:00 | 62 | Jumpei Yamasaki v Uesugi, Teppei | 6-2,7-5 | |
| ITF Japan F4 | 03/25 01:00 | 62 | Jumpei Yamasaki v Tashiro, Yuga | 6-2,6-3 | |
| ITF Japan F3 | 03/19 01:00 | 25 | Sekiguchi, Shuichi v Jumpei Yamasaki | 6-7,7-6,6-2 | |
| ITF Japan F2 | 03/13 03:15 | 25 | Nguyen, Daniel v Jumpei Yamasaki | 6-1,2-6,6-1 | |
| ITF Japan F2 | 03/12 00:30 | 44 | Jumpei Yamasaki v Shirafuji, Naru | 6-0,6-0 | |
| ITF Japan F2 | 03/11 00:30 | 44 | Jumpei Yamasaki v Yasugami, Takashi | 6-0,6-3 | |
| ITF Japan F1 | 03/08 07:15 | 26 | Jumpei Yamasaki v Yuki Mochizuki | 1-6,3-6 |