Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| ITF USA F2 | 2018/01/12 18:00 | Alex Rybakov v Collin Altamirano | 2-6,6-1,2-6 |
| ITF M25 Harlingen | 2019/09/29 00:20 | Adrian Andreev v Alex Rybakov | 6-3,6-1 |
| ITF M25 Harlingen | 2019/09/28 01:00 | Alex Rybakov v Liam Caruana | 7-5,6-4 |
| ITF M25 Harlingen | 2019/09/26 15:00 | Jordi Arconada v Alex Rybakov | 6-4,4-6,7-10 |
| ITF M25 Harlingen | 2019/09/25 23:25 | Alex Rybakov v Christian Langmo | 6-2,6-3 |
| ITF M25 Houston | 2019/09/20 01:55 | Alex Rybakov v Hugo Gaston | 3-6,6-7 |
| ITF M25 Houston | 2019/09/19 01:05 | Adrian Oetzbach v Alex Rybakov | 2-6,2-6 |
| Challenger Cary | 2019/09/09 17:40 | Alex Rybakov v Michael Redlicki | 4-6,2-6 |
| US Open | 2019/08/19 15:00 | Alex Rybakov v Facundo Bagnis | 6-4,1-6,2-6 |
| Challenger Tiburon | 2019/09/23 20:30 | JC Aragone v Collin Altamirano | 6-2,7-6 |
| Challenger Kaohsiung | 2019/09/16 09:00 | Teymuraz Gabashvili v Collin Altamirano | 6-3,5-7,6-4 |
| Challenger Shanghai | 2019/09/13 04:35 | Di Wu v Collin Altamirano | 6-4,6-0 |
| Challenger Shanghai | 2019/09/12 04:20 | Collin Altamirano v Tatsuma Ito | 6-3,7-6 |
| Challenger Shanghai | 2019/09/10 04:00 | Aleksandar Vukic v Collin Altamirano | 4-6,6-7 |
| Challenger Shanghai | 2019/09/09 05:45 | Collin Altamirano v Xin Gao | 6-1,6-1 |
| Challenger Jinan | 2019/09/02 04:30 | Di Wu v Collin Altamirano | 6-4,6-4 |
| Challenger Lexington | 2019/07/31 19:20 | Collin Altamirano v Roy Smith | 4-6,7-6,2-6 |