Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| Challenger Newport Beach | 2019/01/24 20:40 | JC Aragone v Donald Young | 3-6,4-6 |
| Challenger Newport Beach | 2019/01/22 19:45 | Donald Young v Noah Rubin | 6-4,6-3 |
| Challenger Newport Beach | 2019/01/21 18:00 | Patrick Kypson v Donald Young | 3-6,2-6 |
| Australian Open | 2019/01/09 00:50 | Donald Young v Enrique Lopez-Perez | 7-5,1-6,2-6 |
| Challenger Noumea | 2019/01/05 02:00 | Noah Rubin v Donald Young | 6-2,6-3 |
| Challenger Noumea | 2019/01/04 02:35 | Gleb Sakharov v Donald Young | 7-5,3-6,1-6 |
| Challenger Noumea | 2019/01/02 23:30 | Donald Young v Rubin Statham | 7-5,6-1 |
| Challenger Noumea | 2019/01/01 23:00 | Kimmer Coppejans v Donald Young | 6-3,1-6,6-7 |
| Challenger Newport Beach | 2019/01/24 21:50 | Collin Altamirano v Dustin Brown | 7-6,6-2 |
| Challenger Newport Beach | 2019/01/23 22:20 | Collin Altamirano v Victor Estrella Burgos | 7-5,6-2 |
| 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 |