Stadium: Court 9 Round: 26 Ground: Grass
| 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 China F9 | 2018/07/03 07:00 | Lingxi Zhao v Shuichi Sekiguchi | 2-6,0-6 |
| Challenger Fergana | 2018/06/19 07:55 | Rubin Statham v Shuichi Sekiguchi | 6-1,6-7,2-6 |
| Challenger Fergana Qual | 2018/06/18 05:00 | Roman Safiullin v Shuichi Sekiguchi | 4-6,6-2,4-6 |
| ITF Australia F8 | 2018/10/06 00:00 | Jesse Delaney v Vincent Stouff | 1-6,1-6 |
| ITF Australia F7 | 2018/10/02 00:00 | Issei Okamura v Vincent Stouff | 6-4,6-4 |
| ITF Australia F7 | 2018/10/01 00:00 | Vincent Stouff v Gage Brymer | 6-2,6-4 |
| ITF Australia F7 | 2018/09/29 00:00 | James Frawley v Vincent Stouff | 7-6,2-6,1-6 |
| ITF Australia F6 | 2018/09/27 01:00 | Vincent Stouff v Lucas Vuradin | 6-3,4-6,6-7 |
| ITF Australia F6 | 2018/09/26 02:40 | Scott Puodziunas v Vincent Stouff | 2-6,4-6 |
| ITF Australia F6 | 2018/09/24 02:15 | Vincent Stouff v Patrick Luke | 6-4,6-2 |
| ITF Australia F6 | 2018/09/23 03:30 | Jesse Flores v Vincent Stouff | 1-6,3-6 |