| Challenger Kyoto Qual | 2017/02/18 03:00 | Shuichi Sekiguchi v Shinta Fujii | 6-1,7-5 |
| Challenger Bangkok 2 | 2017/01/12 06:00 | Daniel Altmaier v Shuichi Sekiguchi | 6-4,6-1 |
| Challenger Bangkok 2 | 2017/01/11 03:00 | Shuichi Sekiguchi v Yannick Mertens | 6-3,3-6,6-1 |
| Challenger Bangkok 2 | 2017/01/09 08:20 | Shuichi Sekiguchi v Phassawit Bura'ritta | 6-1,6-4 |
| ITF Hong Kong F1 | 2017/01/03 03:15 | Shuichi Sekiguchi v Li-Wei Tan | 6-4,6-2 |
| ITF Hong Kong F5 | 2016/12/30 23:00 | Shuichi Sekiguchi v Sora Fukuda | 6-0,6-7,6-7 |
| ITF Hong Kong F5 | 2016/12/29 23:00 | Shuichi Sekiguchi v Shintaro Imai | 7-6,6-3 |
| ITF Hong Kong F5 | 2016/12/28 23:00 | Shuichi Sekiguchi v Geoffrey Blancaneaux | 6-0,6-4 |
| Challenger Kyoto Qual | 2017/02/18 02:35 | Sota Fujii v Yunosuke Tanaka | 6-3,3-6,6-7 |