Stadium: Estadio Round: 24 Ground: Hardcourt outdoor
| Challenger Cleveland | 2020/02/10 23:00 | Ryan Harrison v Collin Altamirano | 6-4,7-6 |
| Challenger Newport Beach | 2020/01/27 21:35 | Collin Altamirano v Thai-Son Kwiatkowski | 1-6,3-6 |
| ITF M25 Rancho Santa Fe | 2020/01/17 18:45 | Collin Altamirano v Geoffrey Blancaneaux | 0-6,7-6,5-7 |
| ITF M25 Rancho Santa Fe | 2020/01/16 18:00 | Collin Altamirano v Sebastian Fanselow | 6-1,6-1 |
| ITF M25 Rancho Santa Fe | 2020/01/15 17:30 | Collin Altamirano v Lucas Gomez | 6-0,2-6,6-2 |
| ITF M25 Los Angeles | 2020/01/10 18:00 | Alexander Ritschard v Collin Altamirano | 6-1,3-6,6-3 |
| ITF M25 Los Angeles | 2020/01/09 20:45 | Alex Rybakov v Collin Altamirano | 6-3,3-6,4-6 |
| ITF M25 Los Angeles | 2020/01/07 20:50 | Roy Smith v Collin Altamirano | 7-6,1-6,4-6 |
| Challenger Launceston | 2020/02/06 01:55 | Daniel Altmaier v Matias Franco Descotte | 7-5,6-1 |
| Challenger Launceston | 2020/02/04 01:00 | Matias Franco Descotte v Tatsuma Ito | 7-6,6-4 |
| Challenger Launceston | 2020/02/03 00:25 | Matias Franco Descotte v Nicholas David Ionel | 7-6,6-2 |
| Challenger Burnie | 2020/01/27 06:20 | Borna Gojo v Matias Franco Descotte | 6-1,6-3 |
| Challenger Bendigo | 2020/01/14 01:50 | Konstantin Kravchuk v Matias Franco Descotte | 6-2,6-4 |
| Challenger Bendigo | 2020/01/12 02:30 | Jacob Grills v Matias Franco Descotte | 4-6,6-2,4-6 |
| Challenger Houston | 2019/11/11 17:15 | Matias Franco Descotte v Andrea Vavassori | 4-6,3-6 |
| ITF M25 Malibu | 2019/11/05 22:15 | Matias Franco Descotte v Alexander Cozbinov | 6-7,2-6 |