Round: 62 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/19 01:00 | Sekiguchi, Shuichi v Jumpei Yamasaki | 6-7,7-6,6-2 |
| ITF Japan F2 | 2018/03/13 03:15 | Nguyen, Daniel v Jumpei Yamasaki | 6-1,2-6,6-1 |
| ITF Japan F2 | 2018/03/12 00:30 | Jumpei Yamasaki v Shirafuji, Naru | 6-0,6-0 |
| ITF Japan F2 | 2018/03/11 00:30 | Jumpei Yamasaki v Yasugami, Takashi | 6-0,6-3 |
| ITF Japan F1 | 2018/03/08 07:15 | Jumpei Yamasaki v Yuki Mochizuki | 1-6,3-6 |
| ITF Japan F1 | 2018/03/06 02:00 | Kaichi Uchida v Jumpei Yamasaki | 6-1,6-7,3-6 |
| Challenger Yokohama | 2018/02/27 04:45 | Jumpei Yamasaki v Robert, Stephane | 6-3,1-6,3-6 |
| Yokohama, Japan, Qualifying | 2018/02/26 01:00 | Jumpei Yamasaki v Masamichi Imamura | 4-6,7-6,6-4 |
| ITF Japan F3 | 2018/03/17 04:00 | Tashiro, Yuga v Takeshima, Shunrou | 6-7,6-1,2-6 |
| ITF Japan F3 | 2018/03/17 00:30 | Tashiro, Yuga v Kishi, Ryota | 6-7,6-3,6-0 |
| ITF Japan F2 | 2018/03/10 00:30 | Tashiro, Yuga v Yasugami, Takashi | 6-7,6-2,4-6 |
| ITF Japan F1 | 2018/03/04 01:00 | Maesaki, Naoya v Tashiro, Yuga | 6-3,6-4 |
| Egypt F6, Singles Qualifying | 2018/02/17 08:00 | Tashiro, Yuga v Gerritsen, Stephan | 6-7,4-6 |
| Egypt F5, Singles Qualifying | 2018/02/10 12:00 | Johan Nikles v Tashiro, Yuga | 6-1,3-6,7-5 |
| Challenger Toyota | 2017/11/14 05:40 | Tashiro, Yuga v John Millman | 3-6,2-6 |
| Challenger Kobe Qual | 2017/11/04 04:50 | Naoki Nakagawa v Tashiro, Yuga | 6-3,6-1 |