Stadium: Court 1 Round: 25 Ground: Clay
| ITF Japan F8 | 2018/06/11 00:30 | Keisuke Watanuki v Daisuke Sumizawa | 6-4,2-6,6-2 |
| ITF Japan F3 | 2018/03/17 00:30 | Keisuke Watanuki v Keisuke Numajiri | 3-6,1-6 |
| Challenger Kyoto Qual | 2018/02/17 01:00 | Keisuke Watanuki v Kosuke Shibano | 4-6,4-6 |
| ITF Japan F8 | 2017/06/15 02:30 | Keisuke Watanuki v Hiroyasu Ehara | 1-6,3-6 |
| ITF Japan F8 | 2017/06/14 05:50 | Ryota Kishi v Keisuke Watanuki | 0-6,1-6 |
| ITF Japan F8 | 2017/06/12 00:00 | Keisuke Watanuki v Kazuki Nishiwaki | 6-2,6-2 |
| ITF Japan F8 | 2017/06/10 04:00 | Keisuke Watanuki v Taketo Takamisawa | 4-6,6-2,6-3 |
| ITF Japan F7 | 2017/06/08 01:30 | Keisuke Watanuki v Kento Takeuchi | 3-6,5-7 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Teppei Uesugi v Yuga Tashiro | 1-6,6-7 |
| ITF Japan F6 Qual | 2018/04/09 01:00 | Teppei Uesugi v Shunrou Takeshima | 4-6,2-6 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Shinji Hazawa v Teppei Uesugi | 6-4,4-6,6-7 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | Yutaro Matsuzaki v Teppei Uesugi | 4-6,0-6 |
| ITF Japan F4 | 2018/03/26 01:00 | Jumpei Yamasaki v Teppei Uesugi | 6-2,7-5 |
| ITF Japan F4 | 2018/03/25 01:00 | Takumi Kato v Teppei Uesugi | 1-6,4-6 |
| ITF Japan F4 | 2018/03/24 00:00 | Teppei Uesugi v Naru Shirafuji | 6-2,6-3 |
| ITF Japan F3 | 2018/03/18 01:00 | Teppei Uesugi v Tamaki Yamao | 3-6,4-6 |