Ground: Hardcourt outdoor
| ITF Japan F3 | 2014/03/30 02:00 | Watanuki, Yusuke v Niki, Takuto | 4-6,2-6 |
| ITF Japan F4 | 2014/04/01 02:25 | Niki, Takuto v Moritani, Soichiro | 6-2,6-1 |
| ITF Japan F3 | 2014/03/30 02:00 | Watanuki, Yusuke v Niki, Takuto | 4-6,2-6 |
| ITF Japan F3 | 2014/03/29 01:30 | Niki, Takuto v Kibi, Yuya | 6-2,7-6 |
| ITF Japan F3 | 2014/03/28 02:55 | Niki, Takuto v Takeuchi, Kento (1987) | 6-4,6-0 |
| ITF Japan F3 | 2014/03/27 04:00 | Niki, Takuto v Shintaro Imai | 7-5,6-2 |
| ITF Japan F3 | 2014/03/26 02:50 | Niki, Takuto v Watanuki, Keisuke | 6-3,6-1 |
| ITF Japan F2 | 2014/03/18 01:00 | Oku, Hiromasa v Niki, Takuto | 6-7,3-6 |
| ITF Japan F1 | 2014/03/16 02:00 | Wu, Di v Niki, Takuto | 6-2,6-4 |
| ITF Japan F3 | 2014/03/30 02:00 | Watanuki, Yusuke v Niki, Takuto | 4-6,2-6 |
| ITF Japan F3 | 2014/03/29 03:30 | Ehara, Hiroyasu v Watanuki, Yusuke | 1-6,3-6 |
| ITF Japan F3 | 2014/03/28 01:00 | Toshihide Matsui v Watanuki, Yusuke | 4-6,6-4,4-6 |
| ITF Japan F3 | 2014/03/25 01:00 | Watanuki, Yusuke v Jecminek, George | 6-3,6-0 |
| ITF Japan F2 | 2014/03/20 02:30 | Suzuki, Takao v Watanuki, Yusuke | 6-4,6-3 |
| ITF Japan F2 | 2014/03/18 01:00 | Watanuki, Yusuke v Shintaro Imai | 6-4,6-4 |
| ITF Japan F1 | 2014/03/11 03:55 | Toshihide Matsui v Watanuki, Yusuke | 7-5,6-3 |