Stadium: Center Court Round: 64 Ground: Hardcourt indoor
| Challenger Segovia | 2015/08/07 10:50 | Marcel Granollers v Yannick Mertens | 6-2,6-4 |
| Challenger Monterrey | 2018/10/06 00:05 | Marcel Granollers v Ernesto Escobedo | 6-7,6-7 |
| Challenger Monterrey | 2018/10/04 20:00 | Marcel Granollers v Roberto Quiroz | 6-7,7-6,7-5 |
| Challenger Monterrey | 2018/10/03 02:30 | Marcel Granollers v Harrison Adams | 6-4,6-4 |
| Challenger Tiburon | 2018/09/30 21:30 | Marcel Granollers v Michael Mmoh | 3-6,5-7 |
| Challenger Tiburon | 2018/09/29 19:20 | Marcel Granollers v Noah Rubin | 6-2,6-2 |
| Challenger Tiburon | 2018/09/28 18:00 | Marcel Granollers v John-Patrick Smith | 6-2,6-3 |
| Challenger Tiburon | 2018/09/26 18:00 | Marcel Granollers v Cem Ilkel | 6-2,7-5 |
| Challenger Tiburon | 2018/09/24 19:25 | Marcel Granollers v Evan King | 6-2,7-5 |
| ITF Portugal F18 | 2018/09/30 10:00 | Gleb Sakharov v Yannick Mertens | 7-6,6-4 |
| ITF Portugal F18 | 2018/09/29 12:25 | Tiago Cacao v Yannick Mertens | 4-6,1-6 |
| ITF Portugal F18 | 2018/09/28 14:00 | Marek Gengel v Yannick Mertens | 6-2,6-7,1-6 |
| ITF Portugal F18 | 2018/09/27 09:00 | Pedro Araujo v Yannick Mertens | 2-6,3-6 |
| ITF Portugal F18 | 2018/09/26 10:20 | Eduardo Dischinger v Yannick Mertens | 0-6,6-7 |
| ITF France F18 | 2018/09/23 13:00 | Antoine Cornut-Chauvinc v Yannick Mertens | 6-7,2-6 |
| ITF France F18 | 2018/09/22 13:50 | Antoine Escoffier v Yannick Mertens | 6-7,6-3,6-7 |
| ITF France F18 | 2018/09/21 10:30 | Alen Avidzba v Yannick Mertens | 1-6,0-6 |