Round: 44 Ground: Hardcourt outdoor
| ITF Japan F8 | 2016/06/16 02:15 | Keisuke Watanuki v Sho Katayama | 3-6,1-6 |
| ITF Japan F8 | 2016/06/15 04:30 | Shunrou Takeshima v Keisuke Watanuki | 6-7,0-6 |
| ITF Japan F7 | 2016/06/09 02:30 | Chan-Yeong Oh v Keisuke Watanuki | 6-3,6-7,6-4 |
| ITF Japan F7 | 2016/06/07 01:00 | Keisuke Watanuki v Takuto Niki | 6-4,7-6 |
| ITF Japan F6 | 2016/05/31 05:25 | Yusuke Takahashi v Keisuke Watanuki | 6-3,6-4 |
| ITF Japan F6 Qual | 2016/05/29 04:00 | Keisuke Watanuki v Sho Shimabukuro | 6-1,6-0 |
| ITF Japan F6 Qual | 2016/05/28 01:00 | Keisuke Watanuki v Shin Yoshida | 6-1,6-4 |
| ITF Japan F5 | 2016/04/06 03:40 | Keisuke Watanuki v Sho Katayama | 2-6,5-7 |
| Others | 2016/11/05 05:00 | Shinta Fujii v Shinji Hazawa | 2-6,1-6 |
| ITF Vietnam F5 | 2016/09/23 03:00 | Shinta Fujii v Nam Hoang Ly | 5-7,2-6 |
| ITF Vietnam F5 | 2016/09/22 03:00 | Issei Okamura v Shinta Fujii | 3-6,6-7 |
| ITF Vietnam F5 | 2016/09/20 04:15 | Shinta Fujii v Dac Tien Nguyen | 6-2,7-5 |
| ITF Vietnam F8 | 2016/09/18 03:00 | Koichi Sano v Shinta Fujii | 4-6,3-6 |
| ITF Vietnam F8 | 2016/09/18 03:00 | Shinta Fujii v Ho-Gi Kang | 7-5,6-4 |
| ITF Vietnam F8 | 2016/09/17 03:00 | Amer Naow v Shinta Fujii | 3-6,2-6 |
| ITF Vietnam F4 | 2016/09/13 08:05 | Nam Hoang Ly v Shinta Fujii | 6-3,6-4 |