Round: 54 Ground: Clay
| ITF Japan F4 | 2017/03/27 01:00 | Takashi Yasugami v Yuki Matsuo | 7-6,1-6,1-6 |
| ITF Japan F2 | 2017/03/14 04:00 | Takashi Yasugami v Renta Tokuda | 4-6,2-6 |
| ITF Japan F2 | 2017/03/13 01:00 | Takashi Yasugami v Naru Shirafuji | 7-6,6-4 |
| ITF Japan F2 | 2017/03/12 02:00 | Wei-De Lin v Takashi Yasugami | 7-5,5-7,4-6 |
| ITF Japan F4 | 2017/03/28 01:00 | Masaya Kobayashi v Keisuke Watanuki | 6-3,6-2 |
| ITF Japan F4 | 2017/03/27 01:00 | Yuga Tashiro v Keisuke Watanuki | 2-6,6-7 |
| ITF Japan F4 | 2017/03/25 03:00 | Yu Chang v Keisuke Watanuki | 7-6,3-6,4-6 |
| ITF Japan F2 | 2017/03/14 04:20 | Yusuke Takahashi v Keisuke Watanuki | 6-2,6-2 |
| ITF Japan F2 | 2017/03/13 01:00 | Kittiphong Wachiramanowong v Keisuke Watanuki | 4-6,6-7 |
| ITF Japan F2 | 2017/03/12 02:00 | Keisuke Watanuki v Shinta Fujii | 6-2,2-6,6-2 |
| ITF Japan F2 | 2017/03/11 03:00 | Yuta Kawahashi v Keisuke Watanuki | 2-6,2-6 |
| ITF Japan F1 | 2017/03/06 01:00 | Kaito Itsusaki v Keisuke Watanuki | 6-3,6-3 |