Stadium: Cancha Central Round: 27 Ground: Clay
| Challenger Lima MD | 2018/10/22 21:00 | Krstin/Zekic v Sousa/Vervoort | 6-7,2-6 |
| Challenger Lima MD | 2018/10/22 18:40 | Bagnis/Galdos v Cuevas/Cuevas | 4-6,4-6 |
| Challenger Braunschweig MD | 2018/07/11 14:30 | Gonzalez/Koolhof v Cuevas/Cuevas | 7-6,6-1 |
| Challenger Braunschweig MD | 2018/07/09 16:00 | Cuevas/Cuevas v Moeller/Molleker | 6-4,7-5 |
| Challenger Caltanissetta MD | 2018/06/15 16:05 | Cuevas/Cuevas v Gaio/Pellegrino | 2-6,6-7 |
| Challenger Caltanissetta MD | 2018/06/14 13:20 | Arevalo/Reyes-Varela v Cuevas/Cuevas | 3-6,6-3,5-10 |
| Challenger Caltanissetta MD | 2018/06/11 15:50 | Munar/Ruud v Cuevas/Cuevas | 4-6,2-6 |
| Challenger Prostejov MD | 2018/06/08 14:35 | Cuevas/Cuevas v Molchanov/Zelenay | 6-4,3-6,7-10 |
| Challenger Prostejov MD | 2018/06/06 13:45 | Albot/Basic v Cuevas/Cuevas | 3-6,4-6 |