Stadium: Indoor Ct3 Round: 26 Ground: Hardcourt outdoor
| Challenger Little Rock | 2019/06/04 15:00 | Collin Altamirano v Alexander Sarkissian | 6-3,6-1 |
| Challenger Jerusalem | 2019/05/22 07:00 | Edan Leshem v Collin Altamirano | 1-6,6-1,6-4 |
| Challenger Savannah | 2019/05/01 18:15 | Noah Rubin v Collin Altamirano | 6-2,2-6,2-6 |
| Challenger Savannah | 2019/04/29 17:25 | Collin Altamirano v Alen Avidzba | 6-0,7-6 |
| Challenger Tallahassee | 2019/04/24 16:30 | Collin Altamirano v Nino Serdarusic | 3-6,6-2,6-7 |
| Challenger Tallahassee | 2019/04/22 18:05 | Ryan Shane v Collin Altamirano | 4-6,6-7 |
| Challenger Sarasota | 2019/04/16 19:30 | Peter Polansky v Collin Altamirano | 6-1,6-4 |
| Challenger Sarasota | 2019/04/15 19:45 | Evgeny Karlovskiy v Collin Altamirano | 7-6,4-6,4-6 |
| Challenger Little Rock | 2019/06/04 16:30 | Raymond Sarmiento v Maxime Cressy | 7-6,6-3 |
| Challenger Little Rock | 2019/06/03 17:40 | Carlos Gomez-Herrera v Raymond Sarmiento | 3-6,6-7 |
| Challenger Newport Beach Qual | 2018/01/21 20:25 | Dennis Novikov v Raymond Sarmiento | 7-5,6-1 |
| Challenger Newport Beach Qual | 2018/01/20 19:50 | Ulises Blanch v Raymond Sarmiento | 6-3,1-6,4-6 |
| Challenger Tiburon Qual | 2017/09/24 17:00 | Alexios Halebian v Raymond Sarmiento | 6-3,6-4 |
| Challenger Tiburon Qual | 2017/09/23 17:00 | Andrew Carter v Raymond Sarmiento | 6-7,2-6 |
| Challenger Cary | 2017/09/11 16:00 | Cristian Garin v Raymond Sarmiento | 6-2,6-3 |
| US Open Qual | 2017/08/24 18:45 | Tim Smyczek v Raymond Sarmiento | 6-1,6-3 |