Stadium: Stadium 1 Round: 25 Ground: Hardcourt outdoor
| Challenger Binghamton | 2019/07/25 15:55 | Dudi Sela v Collin Altamirano | 6-4,7-5 |
| Challenger Binghamton | 2019/07/24 14:00 | Collin Altamirano v Jeffrey John Wolf | 6-2,7-5 |
| Challenger Binghamton | 2019/07/23 16:25 | Lloyd Glasspool v Collin Altamirano | 1-6,6-7 |
| Challenger Gatineau | 2019/07/15 17:35 | Collin Altamirano v Brandon Holt | 1-6,6-7 |
| Challenger Winnetka | 2019/07/11 17:25 | Denis Istomin v Collin Altamirano | 6-3,6-0 |
| Challenger Winnetka | 2019/07/09 16:45 | Collin Altamirano v Thai-Son Kwiatkowski | 6-3,6-0 |
| Challenger Winnetka | 2019/07/08 16:25 | Collin Altamirano v Martin Redlicki | 6-2,4-6,6-4 |
| Challenger Columbus | 2019/06/13 14:00 | Collin Altamirano v Emilio Gomez | 5-7,7-5,0-6 |
| Challenger Lexington | 2019/07/30 01:10 | Roy Smith v Edan Leshem | 7-6,7-6 |
| Challenger Binghamton | 2019/07/23 14:00 | Roy Smith v Carlos Gomez-Herrera | 5-7,6-7 |
| Challenger Gatineau | 2019/07/15 19:35 | Kaichi Uchida v Roy Smith | 6-3,6-4 |
| Challenger Winnetka | 2019/07/11 16:00 | Roy Smith v Bjorn Fratangelo | 3-6,3-6 |
| Challenger Winnetka | 2019/07/10 15:00 | Michael Mmoh v Roy Smith | 4-6,4-6 |
| Challenger Winnetka | 2019/07/08 21:15 | Raymond Sarmiento v Roy Smith | 7-6,4-6,0-6 |
| Challenger Columbus | 2019/06/10 20:35 | James Trotter v Roy Smith | 7-6,6-3 |
| Challenger Little Rock | 2019/06/04 15:00 | Tim Smyczek v Roy Smith | 3-6,7-5,6-1 |