Round: 25 Ground: Hardcourt outdoor
| ITF China F3 | 2017/03/01 07:35 | Issei Okamura v Marco Bortolotti | 3-6,5-7 |
| ITF China F2 | 2017/02/23 03:00 | Issei Okamura v Rubin Statham | 1-6,3-6 |
| ITF China F2 | 2017/02/21 02:00 | Caio Silva v Issei Okamura | 1-6,0-6 |
| ITF China F1 - Masculino | 2017/02/15 02:00 | Danilo Petrovic v Issei Okamura | 6-3,6-2 |
| Challenger de Launceston - Clasificación | 2017/02/04 01:25 | Issei Okamura v Zach Itzstein | 6-3,4-6,6-7 |
| Challenger de Burnie Clasificación | 2017/01/28 04:10 | Dane Propoggia v Issei Okamura | 6-4,6-2 |
| Challenger de Burnie Clasificación | 2017/01/27 23:00 | Jeremy Beale v Issei Okamura | 6-1,3-6,2-6 |
| ITF Tailandia F5 | 2016/12/20 03:00 | Wishaya Trongcharoenchaikul v Issei Okamura | 6-2,7-6 |
| ITF Japón F1 | 2017/03/06 01:00 | Yuki Mochizuki v Shunrou Takeshima | 6-2,6-4 |
| ITF Japón F1 | 2017/03/05 01:00 | Yuki Mochizuki v Keigo Shimizu | 6-2,6-1 |
| Challenger de Kioto - Clasificación | 2017/02/18 05:55 | Jimmy Wang v Yuki Mochizuki | 6-1,3-6,6-2 |
| Copa Billie Jean King | 2016/11/12 03:10 | Yuki Mochizuki v Yuta Shimizu | 6-3,4-6,3-6 |
| Copa Billie Jean King | 2016/11/07 02:00 | Kuan-Yi Lee v Yuki Mochizuki | 6-1,4-6,6-3 |
| Copa Billie Jean King | 2016/11/06 03:55 | Yuki Mochizuki v Masato Shiga | 6-3,6-2 |
| Copa Billie Jean King | 2016/11/05 02:00 | Yuki Mochizuki v Masayoshi Ono | 2-6,6-3,6-4 |
| ITF Japón F8 | 2016/06/18 01:00 | Gengo Kikuchi v Yuki Mochizuki | 6-3,7-6 |