Stadium: Court 1 Round: 54
| Challenger Quanzhou Qual | 2017/03/18 05:00 | Shuichi Sekiguchi v Aliaksandr Bury | 6-2,6-0 |
| Challenger Taipei Qual | 2018/04/08 06:10 | Yosuke Watanuki v Aliaksandr Bury | 4-6,2-6 |
| Challenger Taipei Qual | 2018/04/07 05:35 | Bang Shuo Yin v Aliaksandr Bury | 6-7,6-7 |
| Challenger Dallas Qual | 2018/01/27 17:45 | Aliaksandr Bury v Michael Zhu | 2-6,5-7 |
| Challenger Andria Qual | 2017/11/18 13:25 | Andrea Vavassori v Aliaksandr Bury | 7-6,6-4 |
| Challenger Brescia | 2017/11/14 15:00 | Aliaksandr Bury v Patrik Nema | 6-7,6-7 |
| Challenger Brescia Qual | 2017/11/12 15:55 | Aliaksandr Bury v Enrico Dalla Valle | 6-4,6-4 |
| Challenger Brescia Qual | 2017/11/11 15:40 | Yann Marti v Aliaksandr Bury | 6-7,6-1,5-7 |
| Challenger Eckental Qual | 2017/10/28 15:55 | Aliaksandr Bury v Nikola Cacic | 5-7,2-6 |
| Challenger Taipei Qual | 2018/04/08 07:25 | Toshihide Matsui v Shuichi Sekiguchi | 5-7,6-7 |
| Challenger Taipei Qual | 2018/04/07 08:20 | Vishnu Vardhan v Shuichi Sekiguchi | 4-6,5-7 |
| ITF Japan F4 | 2018/03/27 01:00 | Jacob Grills v Shuichi Sekiguchi | 7-6,4-6,6-3 |
| ITF Japan F3 | 2018/03/22 04:05 | Shuichi Sekiguchi v Sho Katayama | 5-7,6-4,2-6 |
| ITF Japan F3 | 2018/03/19 01:00 | Shuichi Sekiguchi v Jumpei Yamasaki | 6-7,7-6,6-2 |
| ITF Japan F2 | 2018/03/12 02:30 | Seong Chan Hong v Shuichi Sekiguchi | 6-4,1-6,7-6 |
| Challenger Yokohama Qual | 2018/02/24 05:10 | Hiroki Moriya v Shuichi Sekiguchi | 6-2,6-4 |
| Challenger Kyoto Qual | 2018/02/17 06:10 | Yuya Kibi v Shuichi Sekiguchi | 6-3,6-2 |