Stadium: Cancha Raul Viver Round: 26 Ground: Clay
| Challenger Guayaquil | 2018/10/30 20:35 | Lorenzi, Paolo v Cuevas, Martin | 6-4,6-7,7-6 |
| Challenger Lima | 2018/10/24 19:20 | Arguello, Facundo v Lorenzi, Paolo | 6-4,7-6 |
| Challenger Lima | 2018/10/23 17:30 | Gerald Melzer v Lorenzi, Paolo | 6-7,6-7 |
| Santo Domingo, Dominican Republic | 2018/10/11 22:00 | Lorenzi, Paolo v Delbonis, Federico | 5-7,5-7 |
| Santo Domingo, Dominican Republic | 2018/10/11 15:55 | Lorenzi, Paolo v Gerald Melzer | 7-6,7-6 |
| Santo Domingo, Dominican Republic | 2018/10/10 01:40 | Lorenzi, Paolo v Juan Pablo Varillas | 3-6,6-1,6-0 |
| Monterrey, Mexico | 2018/10/03 01:25 | Lorenzi, Paolo v Melzer, Jurgen | 5-7,3-6 |
| Challenger Biella | 2018/09/21 10:50 | Lorenzi, Paolo v Stefano Travaglia | 2-6,5-7 |
| Challenger Guayaquil | 2018/10/29 19:45 | Krstin, Pedja v Roberto Cid Subervi | 6-3,7-6 |
| Challenger Lima | 2018/10/24 01:05 | Krstin, Pedja v Delbonis, Federico | 2-6,2-6 |
| Santo Domingo, Dominican Republic | 2018/10/13 01:15 | Krstin, Pedja v Delbonis, Federico | 0-6,3-6 |
| Santo Domingo, Dominican Republic | 2018/10/11 15:25 | Emilio Gomez v Krstin, Pedja | 3-6,1-6 |
| Santo Domingo, Dominican Republic | 2018/10/08 23:10 | Krstin, Pedja v Roberto Cid Subervi | 6-0,6-1 |
| Monterrey, Mexico | 2018/10/03 00:00 | Krstin, Pedja v Pedro Martinez | 6-1,6-7,3-6 |
| Challenger Tiburon | 2018/09/24 21:00 | Krstin, Pedja v Fratangelo, Bjorn | 0-6,3-6 |
| Coupe Davis | 2018/09/16 11:00 | Krstin, Pedja v Balaji, N. Sriram | 6-3,6-1 |