Stadium: Court 2 Round: 25
| Challenger Karshi Qual | 2018/05/07 05:30 | Shuichi Sekiguchi v N. Vijay Sundar Prashanth | 6-7,6-4,7-6 |
| Challenger Karshi Qual | 2018/05/06 06:00 | Yaraslav Shyla v Shuichi Sekiguchi | 6-3,1-6,2-6 |
| Challenger Karshi Qual | 2018/05/05 06:35 | Shuichi Sekiguchi v Mikhail Fufygin | 4-6,6-4,6-1 |
| Challenger Seoul Qual | 2018/04/29 02:00 | Ji Hoon Son v Shuichi Sekiguchi | 6-2,7-6 |
| Challenger Nanchang Qual | 2018/04/15 03:00 | Shuichi Sekiguchi v Yuanfeng Li | 6-3,6-1 |
| Challenger Taipei | 2018/04/11 06:35 | Shuichi Sekiguchi v Dudi Sela | 4-6,2-6 |
| Challenger Taipei Qual | 2018/04/08 07:25 | Toshihide Matsui v Shuichi Sekiguchi | 5-7,6-7 |
| Challenger Taipei Qual | 2018/04/07 08:20 | Vishnu Vardhan v Shuichi Sekiguchi | 4-6,5-7 |
| ATP Istanbul Qual | 2018/04/28 11:25 | Ramkumar Ramanathan v Aldin Setkic | 6-4,6-3 |
| Challenger Leon | 2018/04/25 00:45 | Adrian Menendez-Maceiras v Aldin Setkic | 7-5,7-6 |
| Challenger Guadalajara | 2018/04/16 22:25 | Aldin Setkic v Victor Estrella Burgos | 4-6,2-6 |
| Challenger Mexico City | 2018/04/10 19:35 | Roberto Quiroz v Aldin Setkic | 6-1,6-3 |
| Challenger St Brieuc | 2018/03/28 10:40 | Zdenek Kolar v Aldin Setkic | 6-4,6-4 |
| Challenger St Brieuc | 2018/03/27 11:15 | Aldin Setkic v Lukas Lacko | 3-6,6-3,6-4 |
| Challenger Lille | 2018/03/20 15:00 | Aldin Setkic v Stephane Robert | 2-6,6-3,6-7 |
| ITF Egypt F8 | 2018/03/08 09:40 | Aldin Setkic v Clement Geens | 6-4,6-3 |