Stadium: Court 3 Round: 46 Ground: Hardcourt indoor
| Challenger Sibiu | 2018/09/18 07:00 | Aldin Setkic v Kevin Krawietz | 5-7,2-6 |
| Challenger Shanghai | 2018/09/14 03:00 | Zhe Li v Aldin Setkic | 6-4,6-0 |
| Challenger Shanghai | 2018/09/13 03:00 | Aldin Setkic v Rigele Te | 6-3,7-6 |
| Challenger Shanghai | 2018/09/11 07:00 | Aldin Setkic v Yunseong Chung | 6-3,6-4 |
| Challenger Shanghai | 2018/09/10 03:00 | Aldin Setkic v N. Vijay Sundar Prashanth | 6-4,6-4 |
| Challenger Shanghai | 2018/09/09 03:00 | Aldin Setkic v Vishnu Vardhan | 6-4,6-2 |
| Challenger Shanghai | 2018/09/08 05:00 | Aldin Setkic v Kazuki Nishiwaki | 6-3,6-2 |
| Challenger Zhangjiagang | 2018/09/05 04:20 | Uladzimir Ignatik v Aldin Setkic | 6-2,7-6 |
| Challenger Almaty 2 | 2018/09/29 09:20 | Khumoyun Sultanov v Tobias Simon | 7-6,6-4 |
| Challenger Orleans | 2018/09/26 09:00 | Tobias Simon v Lorenzo Sonego | 3-6,7-6,3-6 |
| Challenger Orleans | 2018/09/24 10:35 | Hugo Nys v Tobias Simon | 4-6,6-3,6-3 |
| Challenger Orleans | 2018/09/23 12:35 | Hugo Grenier v Tobias Simon | 3-6,7-6,6-7 |
| Challenger Orleans | 2018/09/22 15:15 | Tobias Simon v Tim Puetz | 6-2,4-6,7-6 |
| Challenger Istanbul | 2018/09/10 07:30 | Tim Van Rijthoven v Tobias Simon | 6-3,7-6 |
| Challenger Istanbul | 2018/09/09 09:00 | Vladimir Polyakov v Tobias Simon | 0-6,3-6 |
| Challenger Istanbul | 2018/09/08 07:00 | Isaac Stoute v Tobias Simon | 3-6,6-4,4-6 |