Stadium: Court 13 Round: 27 Ground: Hardcourt outdoor
| Challenger Yokohama Qual | 2017/02/25 01:00 | Yusuke Takahashi v Shuichi Sekiguchi | 6-4,3-6,2-6 |
| Challenger Da Nang | 2019/01/06 03:00 | Viktor Durasovic v Shuichi Sekiguchi | 6-3,6-2 |
| ITF M25 Hong Kong | 2019/01/02 02:55 | Shuichi Sekiguchi v Carlos Boluda-Purkiss | 5-7,4-6 |
| Challenger Kobe | 2018/11/13 07:50 | Jordi Samper-Montana v Shuichi Sekiguchi | 6-4,6-1 |
| ITF Vietnam F4 | 2018/10/25 03:00 | Shuichi Sekiguchi v Filip Bergevi | 3-6,4-6 |
| ITF Vietnam F4 | 2018/10/23 05:20 | Shuichi Sekiguchi v Billy Harris | 7-6,4-6,7-6 |
| ITF Slovakia F3 | 2018/08/07 11:25 | Samm Butler v Shuichi Sekiguchi | 6-1,7-6 |
| ITF Austria F3 | 2018/07/16 08:00 | Jorge Panta v Shuichi Sekiguchi | 1-6,7-6,7-5 |
| ITF Czech Republic F6 | 2018/07/10 08:00 | Martin Bugaj v Shuichi Sekiguchi | 6-1,6-2 |
| Challenger Da Nang | 2019/01/08 06:50 | Alen Avidzba v Yusuke Takahashi | 6-4,6-2 |
| Challenger Noumea | 2018/12/31 04:55 | Gleb Sakharov v Yusuke Takahashi | 6-4,6-1 |
| Challenger Liuzhou | 2018/10/20 06:55 | Renta Tokuda v Yusuke Takahashi | 7-5,6-0 |
| Challenger Ningbo | 2018/10/16 10:00 | Tatsuma Ito v Yusuke Takahashi | 7-6,6-3 |
| Challenger Ningbo | 2018/10/15 02:30 | Arjun Kadhe v Yusuke Takahashi | 4-6,1-6 |
| Challenger Ningbo | 2018/10/14 02:30 | Zhao Zhao v Yusuke Takahashi | 0-6,6-7 |
| ATP Chengdu | 2018/09/22 07:20 | Yusuke Takahashi v Felix Auger Aliassime | 3-6,2-6 |
| Challenger Shanghai | 2018/09/08 07:55 | Yusuke Takahashi v Yuta Shimizu | 6-3,2-6,5-7 |