| ITF Japan F5 | 2015/06/01 01:00 | Ryota Kishi v Ren Nakamura | 6-3,6-4 |
| ITF Guam F1 | 2015/05/25 02:05 | Ken Onoda v Ryota Kishi | 2-6,6-2,7-5 |
| ITF Japan F2 | 2015/03/15 02:00 | Ryota Kishi v Kaito Uesugi | 1-6,6-4,2-6 |
| ITF Japan F1 | 2015/03/08 01:00 | Ryota Kishi v Yuki Matsuo | 3-6,2-6 |
| ITF Japan F1 | 2015/03/07 03:00 | Ryota Kishi v Haru Inoue | 7-5,6-3 |
| ITF Tunisia F5 | 2015/02/04 08:30 | Gianluca Mager v Ryota Kishi | 6-3,6-2 |
| ITF Tunisia F5 | 2015/01/28 12:25 | Ryota Kishi v Danilo Petrovic | 3-6,6-7 |
| ITF Tunisia F3 | 2015/01/24 08:30 | Ryota Kishi v David Micevski | 6-2,4-6,7-6 |
| ITF Japan F5 | 2015/05/30 01:00 | Issei Okamura v Shota Iino | 6-3,2-6,6-4 |