Stadium: Center Court Round: 26 Ground: Hardcourt outdoor
| Challenger Yokohama Qual | 2017/02/27 01:00 | Brydan Klein v Shuichi Sekiguchi | 7-5,6-2 |
| Challenger Yokohama Qual | 2017/02/26 01:00 | Jimmy Wang v Shuichi Sekiguchi | 6-2,6-7,2-6 |
| Challenger Yokohama Qual | 2017/02/25 01:00 | Yusuke Takahashi v Shuichi Sekiguchi | 6-4,3-6,2-6 |
| Challenger Kyoto | 2017/02/21 01:30 | Tatsuma Ito v Shuichi Sekiguchi | 6-2,6-3 |
| Challenger Kyoto Qual | 2017/02/20 01:30 | Shuichi Sekiguchi v Evgeny Karlovskiy | 5-7,0-6 |
| Challenger Kyoto Qual | 2017/02/19 01:00 | Shuichi Sekiguchi v Yunosuke Tanaka | 6-0,6-4 |
| 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 Morelos | 2017/02/25 20:00 | Nicolas Jarry v Alexander Bublik | 6-7,4-6 |
| Challenger Morelos | 2017/02/24 16:30 | Alexander Bublik v Eduardo Struvay | 6-4,6-4 |
| Challenger Morelos | 2017/02/23 16:00 | Alejandro Gomez v Alexander Bublik | 4-6,4-6 |
| Challenger Morelos | 2017/02/22 17:05 | Jose Hernandez-Fernandez v Alexander Bublik | 6-4,4-6,2-6 |
| Challenger Morelos | 2017/02/20 16:30 | Juan Pablo Paz v Alexander Bublik | 4-6,7-6,1-6 |
| Challenger Burnie | 2017/02/01 01:30 | Alexander Bublik v Christopher O'Connell | 6-7,5-7 |
| Challenger Burnie | 2017/01/31 01:15 | Alexander Bublik v Yuya Kibi | 6-3,7-5 |
| Australian Open 2017 | 2017/01/18 00:00 | Malek Jaziri v Alexander Bublik | 6-2,6-3,7-5 |