| ITF Japan F7 Qual | 2015/06/15 00:30 | Sano, Koichi v Osafune, Masaki | 6-4,6-2 |
| ITF Japan F6 | 2015/06/09 04:00 | Sano, Koichi v 오카무라, 이세이 | 2-6,4-6 |
| ITF Japan F6 Qual | 2015/06/08 01:00 | Kishi, Ryota v Sano, Koichi | 2-6,0-6 |
| ITF Japan F6 Qual | 2015/06/07 05:00 | Sano, Koichi v Numajiri, Keisuke | 6-0,4-6,6-1 |
| ITF Japan F5 | 2015/06/02 03:15 | Oku, Hiromasa v Sano, Koichi | 6-4,3-6,6-2 |
| ITF Guam F1 | 2015/05/28 00:00 | Sano, Koichi v 스스키, 코 | 2-6,1-6 |
| ITF Guam F1 | 2015/05/26 03:40 | 데스코트, 마티아스 프란코 v Sano, Koichi | 2-6,6-7 |
| ITF Japan F6 Qual | 2014/06/09 03:00 | Watanuki, Keisuke v Sano, Koichi | 6-4,6-0 |
| ITF Korea F1 | 2015/05/16 03:30 | 권, 순우 v 권, 오희 | 6-2,6-1 |