| ITF Japan F6 Qual | 2015/06/07 03:30 | Ryota Kishi v Shota Iino | 7-5,3-6,6-3 |
| 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 Japan F6 Qual | 2015/06/07 05:00 | Koichi Sano v Keisuke Numajiri | 6-0,4-6,6-1 |
| ITF Japan F5 | 2015/06/02 03:15 | Hiromasa Oku v Koichi Sano | 6-4,3-6,6-2 |
| ITF Guam F1 | 2015/05/28 00:00 | Koichi Sano v Ko Suzuki | 2-6,1-6 |
| ITF Guam F1 | 2015/05/26 03:40 | Matias Franco Descotte v Koichi Sano | 2-6,6-7 |
| ITF Japan F6 Qual | 2014/06/09 03:00 | Keisuke Watanuki v Koichi Sano | 6-4,6-0 |
| ITF Japan F6 Qual | 2014/06/07 00:00 | Yusei Fukuoka v Koichi Sano | 0-6,2-6 |
| ITF Japan F5 | 2014/06/03 02:30 | Koichi Sano v Yuya Kibi | 4-6,2-6 |
| ITF Guam F1 | 2014/05/27 02:45 | Jeevan Nedunchezhiyan v Koichi Sano | 6-2,6-4 |