Round: 28 Ground: Hardcourt outdoor
| ITF Hong Kong F1 | 2017/06/22 03:00 | Katsuki Nagao v Jumpei Yamasaki | 3-6,1-6 |
| ITF Hong Kong F1 | 2017/06/21 10:20 | Eric James Johnson v Jumpei Yamasaki | 3-6,3-6 |
| ITF Hong Kong F1 | 2017/06/20 10:35 | Hei Yin Andrew Li v Jumpei Yamasaki | 4-6,1-6 |
| ITF Qatar F2 | 2017/04/11 12:00 | Daniel Altmaier v Jumpei Yamasaki | 6-1,6-3 |
| ITF Japan F4 | 2017/03/30 01:00 | Kaito Uesugi v Jumpei Yamasaki | 6-2,6-2 |
| ITF Japan F4 | 2017/03/28 03:00 | Yusuke Watanuki v Jumpei Yamasaki | 7-6,4-6,6-7 |
| ITF Japan F3 | 2017/03/22 04:45 | Jumpei Yamasaki v Jeamoon Lee | 6-7,3-6 |
| ITF Japan F3 | 2017/03/20 01:00 | Renta Tokuda v Jumpei Yamasaki | 3-6,6-1,3-6 |
| ITF Hong Kong F1 | 2017/06/22 03:00 | Karunuday Singh v Yuki Mochizuki | 6-3,1-6,0-6 |
| ITF Hong Kong F1 | 2017/06/20 09:50 | Yuki Mochizuki v Evan Song | 2-6,6-1,6-2 |
| ITF Japan F8 | 2017/06/17 01:00 | Yusuke Watanuki v Yuki Mochizuki | 7-5,6-1 |
| ITF Japan F8 | 2017/06/16 01:00 | Yuta Shimizu v Yuki Mochizuki | 1-6,1-6 |
| ITF Japan F8 | 2017/06/15 01:00 | Yuki Mochizuki v Shunrou Takeshima | 6-3,6-4 |
| ITF Japan F8 | 2017/06/13 01:30 | Takashi Saito v Yuki Mochizuki | 6-7,1-6 |
| ITF Japan F6 | 2017/05/29 05:55 | Yuki Mochizuki v Shuichi Sekiguchi | 3-6,4-6 |
| ITF Japan F5 | 2017/04/03 05:00 | Masato Shiga v Yuki Mochizuki | 6-4,6-0 |