| ITF Vietnam F8 | 2016/09/18 03:00 | Koichi Sano v Shinta Fujii | 4-6,3-6 |
| ITF Vietnam F4 | 2016/09/12 03:00 | Arata Onozawa v Koichi Sano | 2-6,7-6,6-0 |
| ITF China F13 | 2016/07/20 02:30 | Issei Okamura v Koichi Sano | 6-0,6-2 |
| ITF China F13 | 2016/07/19 04:00 | Koichi Sano v Xi Qi | 6-2,7-6 |
| ITF China F12 | 2016/07/13 02:30 | Soichiro Moritani v Koichi Sano | 6-7,6-4,6-1 |
| ITF China F12 | 2016/07/12 02:30 | Zihao Xia v Koichi Sano | 6-7,3-6 |
| ITF Japan F8 | 2016/06/13 01:00 | Koichi Sano v Kaito Uesugi | 2-6,4-6 |
| ITF Japan F8 | 2016/06/11 01:00 | Koichi Sano v Yuga Tashiro | 6-3,7-5 |
| 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 |