Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| 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 |
| ITF China F9 | 2018/07/06 03:00 | Min-Kyu Song v Shuichi Sekiguchi | 6-2,6-1 |
| ITF China F9 | 2018/07/05 04:35 | Chenhe Li v Shuichi Sekiguchi | 2-6,5-7 |
| ITF Portugal F22 | 2018/10/24 12:40 | Carlos Boluda-Purkiss v Jakob Johansson-Holm | 2-6,7-5,3-6 |
| ITF Spain F31 | 2018/10/11 11:05 | Carlos Boluda-Purkiss v Omar Salman | 2-6,2-6 |
| ITF Spain F31 | 2018/10/10 10:30 | Carlos Boluda-Purkiss v Sergi Perez Contri | 6-1,6-0 |
| ITF Spain F29 | 2018/09/25 12:00 | Eduard Esteve Lobato v Carlos Boluda-Purkiss | 6-2,6-7,6-3 |
| ITF Spain F27 | 2018/09/15 18:00 | Carlos Boluda-Purkiss v Omar Salman | 6-1,6-1 |
| ITF Spain F27 | 2018/09/12 10:00 | Carlos Boluda-Purkiss v Franco Feitt | 6-2,6-1 |
| ITF Spain F27 | 2018/09/11 18:30 | Carlos Boluda-Purkiss v Benjamin Winter Lopez | 6-0,6-2 |
| ITF Spain F24 | 2018/08/23 10:00 | Ivan Gakhov v Carlos Boluda-Purkiss | 6-4,1-6,6-3 |