Round: 62 Ground: Hardcourt outdoor
| ITF Japan F1 | 2017/03/05 01:00 | Yutaro Matsuzaki v Kaito Itsusaki | 4-6,2-6 |
| Challenger Yokohama Qual | 2017/02/26 02:20 | Kaito Itsusaki v Jumpei Yamasaki | 3-6,3-6 |
| Challenger Yokohama Qual | 2017/02/25 02:55 | Peter Kobelt v Kaito Itsusaki | 6-7,6-7 |
| ITF Japan F5 | 2016/04/03 02:30 | Ryota Kishi v Kaito Itsusaki | 6-3,6-1 |
| ITF Japan F1 | 2015/03/08 01:00 | Shunrou Takeshima v Kaito Itsusaki | 6-2,6-4 |
| ITF Japan F1 | 2017/03/05 01:00 | Masaki Osafune v Keisuke Watanuki | 6-7,6-0,2-6 |
| 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 |