Stadium: Court G Round: 26 Ground: Hardcourt outdoor
| ITF Japan F1 | 2017/03/07 02:40 | Jumpei Yamasaki v Gengo Kikuchi | 4-6,2-6 |
| ITF Chinese Taipei F2 | 2018/07/24 02:00 | Hsien-Yin Peng v Gengo Kikuchi | 6-3,6-4 |
| ITF Chinese Taipei F1 | 2018/07/18 03:05 | Ti Chen v Gengo Kikuchi | 6-2,6-3 |
| ITF Japan F8 | 2018/06/17 02:00 | Rio Noguchi v Gengo Kikuchi | 6-3,6-4 |
| ITF Japan F8 | 2018/06/16 02:00 | Gengo Kikuchi v Sho Katayama | 6-4,7-5 |
| ITF Japan F8 | 2018/06/15 01:30 | Yuya Kibi v Gengo Kikuchi | 6-4,4-6,3-6 |
| ITF Japan F8 | 2018/06/14 01:00 | Gengo Kikuchi v Shinji Hazawa | 6-4,6-3 |
| ITF Japan F8 | 2018/06/13 01:00 | Gengo Kikuchi v Masaya Kobayashi | 6-0,6-1 |
| ITF Japan F7 | 2018/06/09 03:20 | Takashi Saito v Gengo Kikuchi | 4-6,7-6,6-3 |
| ITF M15 Claremont | 2019/02/07 18:00 | Jenson Brooksby v Jumpei Yamasaki | 6-2,6-1 |
| ITF M15 Claremont | 2019/02/06 18:00 | Dusty H. Boyer v Jumpei Yamasaki | 6-4,3-6,6-7 |
| ITF M25 Weston | 2019/01/29 18:20 | Jumpei Yamasaki v Patrick Kypson | 2-6,3-6 |
| ITF M25 Palm Coast | 2019/01/23 18:05 | Matic Spec v Jumpei Yamasaki | 6-3,7-6 |
| ITF M25 Hong Kong | 2019/01/04 04:20 | Jumpei Yamasaki v Evan Furness | 0-6,4-6 |
| ITF M25 Hong Kong | 2019/01/03 10:10 | Jumpei Yamasaki v Alen Avidzba | 7-5,7-6 |
| ITF M25 Hong Kong | 2019/01/02 08:05 | Zsombor Piros v Jumpei Yamasaki | 6-7,5-7 |
| ITF M25 Hong Kong | 2019/01/01 02:00 | Jumpei Yamasaki v Runhao Hua | 6-2,6-0 |