Stadium: Court 2 Round: 24 Ground: Hardcourt outdoor
| Challenger Winnetka | 2019/07/09 16:45 | Collin Altamirano v Thai-Son Kwiatkowski | 6-3,6-0 |
| 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 |
| ITF M15 Austin | 2019/11/24 16:50 | Collin Altamirano v Jacob Fearnley | 4-6,6-4,6-4 |
| ITF M15 Austin | 2019/11/23 18:30 | Collin Altamirano v Ruan Roelofse | 6-4,4-6,6-2 |
| Australian Open | 2020/01/15 03:15 | Thai-Son Kwiatkowski v Christopher Eubanks | 3-6,6-7 |
| Challenger Noumea | 2020/01/08 07:40 | Martin Klizan v Thai-Son Kwiatkowski | 7-6,4-6,6-4 |
| Challenger Noumea | 2020/01/07 00:00 | Thai-Son Kwiatkowski v Constant Lestienne | 6-4,6-2 |
| Challenger Noumea | 2020/01/05 23:30 | Mathias Bourgue v Thai-Son Kwiatkowski | 4-6,6-3,4-6 |
| Challenger Tiburon | 2019/09/28 21:25 | Thai-Son Kwiatkowski v Thanasi Kokkinakis | 6-2,2-6,1-6 |
| Challenger Tiburon | 2019/09/27 21:25 | Brandon Nakashima v Thai-Son Kwiatkowski | 5-7,6-1,6-7 |
| Challenger Tiburon | 2019/09/26 22:30 | Thai-Son Kwiatkowski v Marcos Giron | 4-6,7-6,6-4 |
| Challenger Tiburon | 2019/09/24 22:55 | Thai-Son Kwiatkowski v Carlos Gomez-Herrera | 6-4,6-4 |