Stadium: Court 2 Round: 26 Ground: Hardcourt indoor
| Challenger Buenos Aires | 2018/11/11 22:00 | Ulises Blanch v Bastian Malla | 3-6,4-6 |
| Challenger Montevideo | 2018/11/05 17:45 | Juan Ignacio Galarza v Ulises Blanch | 6-3,2-6,6-4 |
| Challenger Montevideo | 2018/11/04 14:45 | Tomas Lipovsek Puches v Ulises Blanch | 3-6,2-6 |
| Challenger Montevideo | 2018/11/03 17:30 | Emiliano Troche v Ulises Blanch | 4-6,2-6 |
| Challenger Guayaquil | 2018/10/31 16:00 | Ulises Blanch v Facundo Arguello | 4-6,1-6 |
| Challenger Guayaquil | 2018/10/30 19:20 | Ulises Blanch v Facundo Bagnis | 7-5,6-4 |
| Challenger Guayaquil | 2018/10/29 15:30 | Martin Cuevas v Ulises Blanch | 6-2,6-3 |
| Challenger Guayaquil | 2018/10/28 17:20 | Tomas Martin Etcheverry v Ulises Blanch | 6-7,3-6 |
| Challenger Charlottesville | 2018/10/30 15:25 | Tommy Paul v Noah Rubin | 6-2,6-1 |
| Challenger Las Vegas | 2018/10/22 21:25 | Noah Rubin v Blaz Rola | 3-6,6-1,3-6 |
| Challenger Fairfield | 2018/10/11 19:00 | Jeffrey John Wolf v Noah Rubin | 6-3,6-2 |
| Challenger Fairfield | 2018/10/10 00:00 | Axel Geller v Noah Rubin | 3-6,4-6 |
| Challenger Stockton | 2018/10/05 19:15 | Jordan Thompson v Noah Rubin | 6-7,7-6,6-3 |
| Challenger Stockton | 2018/10/04 16:30 | William Blumberg v Noah Rubin | 1-6,6-4,4-6 |
| Challenger Stockton | 2018/10/01 23:10 | Jenson Brooksby v Noah Rubin | 2-6,4-6 |
| Challenger Tiburon | 2018/09/29 19:20 | Marcel Granollers v Noah Rubin | 6-2,6-2 |