Round: 26 Ground: Hardcourt outdoor
| ITF Japan F1 | 2016/03/10 01:00 | Shuichi Sekiguchi v Masaki Sasai | 6-3,6-0 |
| Challenger Launceston | 2016/02/02 04:20 | Alex Bolt v Shuichi Sekiguchi | 6-3,6-4 |
| Challenger Shanghai | 2015/10/10 05:40 | Nikoloz Basilashvili v Shuichi Sekiguchi | 6-4,6-2 |
| WTA Kuala Lumpur Qual | 2015/09/26 02:00 | Andre Begemann v Shuichi Sekiguchi | 2-6,6-2,6-3 |
| Challenger Kaohsiung Qual | 2015/09/20 06:50 | Shuichi Sekiguchi v Chu-Huan Yi | 4-6,4-6 |
| Challenger Granby | 2015/07/23 15:00 | Shuichi Sekiguchi v Matteo Donati | 4-6,1-6 |
| ITF Thailand F9 | 2015/06/27 03:00 | Christopher Rungkat v Shuichi Sekiguchi | 6-4,6-3 |
| ITF Thailand F9 | 2015/06/26 03:00 | Shuichi Sekiguchi v Jung-Woong Na | 6-4,6-3 |
| ITF Japan F1 | 2016/03/08 01:00 | Sho Katayama v Yuichi Ito | 6-3,4-6,6-2 |
| ITF China F13 | 2015/08/13 01:30 | Sho Katayama v Tsung-Hua Yang | 3-6,5-7 |
| ITF China F13 | 2015/08/12 02:00 | Sho Katayama v Xi Qi | 7-5,6-2 |
| ITF China F12 | 2015/08/06 08:00 | Sho Katayama v Winston Lin | 4-6,6-7 |
| ITF China F12 | 2015/08/03 08:00 | Sho Katayama v Fajing Sun | 6-4,6-4 |
| ITF Japan F8 | 2015/06/28 01:00 | Yasutaka Uchiyama v Sho Katayama | 6-2,6-3 |
| ITF Japan F8 | 2015/06/27 01:00 | Sho Katayama v Renta Tokuda | 1-6,7-5,6-2 |
| ITF Japan F8 | 2015/06/26 01:00 | Sho Katayama v Shunrou Takeshima | 3-6,6-0,6-3 |