Stadium: Court 4 Round: 25 Ground: Clay
| ITF Czech Republic F1 | 2018/05/14 08:00 | Semjan, Marek v Bugaj, Martin | 6-1,6-2 |
| Turkey F12, Singles Qualifying | 2018/03/24 06:30 | Denis Klok v Bugaj, Martin | 6-3,3-6,7-5 |
| ITF Turkey F11 | 2018/03/17 08:30 | Gabriel Donev v Bugaj, Martin | 6-2,7-5 |
| ITF China F9 | 2018/07/06 03:00 | Song, Min-Kyu v Sekiguchi, Shuichi | 6-2,6-1 |
| ITF China F9 | 2018/07/05 04:35 | Li, Chenhe v Sekiguchi, Shuichi | 2-6,5-7 |
| ITF China F9 | 2018/07/03 07:00 | Zhao, Lingxi v Sekiguchi, Shuichi | 2-6,0-6 |
| Fergana, Uzbekistan | 2018/06/19 07:55 | Rubin Statham v Sekiguchi, Shuichi | 6-1,6-7,2-6 |
| Challenger Fergana Qual | 2018/06/18 05:00 | Roman Safiullin v Sekiguchi, Shuichi | 4-6,6-2,4-6 |
| Challenger Fergana Qual | 2018/06/17 06:25 | Altug Celikbilek v Sekiguchi, Shuichi | 2-6,1-6 |
| Challenger Fergana Qual | 2018/06/16 09:40 | Sekiguchi, Shuichi v Granollers, Gerard | 6-1,6-4 |
| Challenger Almaty Qual | 2018/06/10 04:30 | Sekiguchi, Shuichi v Joao Menezes | 6-3,3-6,6-7 |