| ITF - Japan F5 | 2017/04/04 00:30 | Yuki Matsuo v Koichi Sano | 7-5,7-6 |
| ITF - Japan F5 | 2017/04/02 01:00 | Koichi Sano v Rimpei Kawakami | 6-1,6-2 |
| ITF - Japan F5 | 2017/04/01 02:00 | Koichi Sano v Artem Vu | 6-2,6-4 |
| ITF - Japan F4 | 2017/03/25 03:00 | Koichi Sano v Yohei Ono | 3-6,1-6 |
| ITF - Japan F3 | 2017/03/18 00:30 | Yuki Matsuo v Koichi Sano | 6-4,7-6 |
| ITF - Japan F2 | 2017/03/14 06:05 | Gengo Kikuchi v Koichi Sano | 6-2,6-4 |
| ITF - Japan F2 | 2017/03/13 01:00 | Collin Johns v Koichi Sano | 5-7,6-4,4-6 |
| ITF - Japan F2 | 2017/03/12 03:00 | Kaito Itsusaki v Koichi Sano | 6-7,1-6 |
| ITF - Japan F8 | 2016/06/12 01:00 | Yuki Mochizuki v Akito Higa | 6-2,6-3 |
| ITF - Japan F1 | 2016/03/06 03:00 | Akito Higa v Ko Suzuki | 6-7,1-6 |
| ITF - Japan F1 | 2016/03/05 03:00 | Masayoshi Ono v Akito Higa | 6-7,2-6 |
| ITF - Japan F7 | 2015/06/16 00:30 | Akito Higa v Renta Tokuda | 0-6,1-6 |