Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| Challenger Pune | 2018/11/20 09:50 | Collin Altamirano v Lucas Gerch | 3-6,1-6 |
| Challenger Bangalore | 2018/11/13 05:30 | Collin Altamirano v Mukund Sasikumar | 6-7,3-6 |
| Challenger Charlottesville | 2018/10/30 22:10 | Marcos Giron v Collin Altamirano | 6-4,6-4 |
| Challenger Calgary | 2018/10/18 01:20 | Collin Altamirano v Filip Peliwo | 7-5,6-7,1-6 |
| Challenger Calgary | 2018/10/15 18:40 | Jay Clarke v Collin Altamirano | 5-7,0-6 |
| Challenger Fairfield | 2018/10/10 22:20 | Alex Bolt v Collin Altamirano | 7-6,6-7,7-6 |
| Challenger Stockton | 2018/09/29 22:20 | Collin Altamirano v Isaiah Strode | 4-6,0-6 |
| US Open | 2018/08/27 16:30 | Collin Altamirano v Ugo Humbert | 3-6,6-7,3-6 |
| Challenger Newport Beach | 2019/01/22 18:00 | Thai-Son Kwiatkowski v Victor Estrella Burgos | 3-6,4-6 |
| Challenger Santo Domingo | 2018/10/10 00:20 | Victor Estrella Burgos v Federico Delbonis | 5-7,3-6 |
| Challenger Monterrey | 2018/10/02 02:40 | Nino Serdarusic v Victor Estrella Burgos | 6-3,6-1 |
| Challenger Chicago | 2018/09/05 15:00 | Alexei Popyrin v Victor Estrella Burgos | 6-3,7-5 |
| US Open | 2018/08/24 16:40 | Victor Estrella Burgos v Stefano Travaglia | 4-6,0-6 |
| US Open | 2018/08/23 19:15 | Victor Estrella Burgos v Bjorn Fratangelo | 7-6,6-3 |
| US Open | 2018/08/21 19:50 | Jurgen Zopp v Victor Estrella Burgos | 3-6,1-6 |
| ATP Newport | 2018/07/17 16:55 | Ramkumar Ramanathan v Victor Estrella Burgos | 6-4,6-1 |