[373] Marcos Giron 6-4,6-4 Collin Altamirano [283] 2018-10-30 22:10
Stadium: Court 9 Round: 25 Ground: Hardcourt indoor
Head to Head
| ITF USA F2 | 2018/01/11 00:10 | Collin Altamirano v Marcos Giron | 7-6,6-3 |
| ITF USA F2 | 2017/01/15 20:30 | Collin Altamirano v Marcos Giron | 6-7,1-6 |
| ITF USA F26 | 2015/09/16 18:40 | Marcos Giron v Collin Altamirano | 6-3,3-6,3-6 |
Home History
| Challenger - Charlottesville | 2018/10/29 14:00 | Mikael Ymer v Marcos Giron | 4-6,1-6 |
| Challenger - Charlottesville | 2018/10/28 15:40 | Evan Song v Marcos Giron | 3-6,6-7 |
| Challenger - Charlottesville | 2018/10/27 14:00 | Marcos Giron v Harri Heliovaara | 3-6,6-1,6-1 |
| Challenger - Fairfield | 2018/10/06 22:15 | Marcos Giron v Thai-Son Kwiatkowski | 6-4,2-6,4-6 |
| Challenger Stockton | 2018/09/30 17:00 | Marcos Giron v Pablo Vivero Gonzalez | 3-6,6-1,4-6 |
| Challenger Stockton | 2018/09/29 17:00 | Roberto Ortega-Olmedo v Marcos Giron | 4-6,4-6 |
| Challenger - Tiburon | 2018/09/23 17:00 | Marcos Giron v Roberto Ortega-Olmedo | 3-6,6-1,5-7 |
| Challenger - Tiburon | 2018/09/22 17:00 | Marcos Giron v Marc-Andrea Huesler | 6-2,7-6 |
Away History
| 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 |
| US Open | 2018/08/24 18:00 | Lorenzo Sonego v Collin Altamirano | 4-6,6-7 |
| US Open | 2018/08/23 21:30 | Collin Altamirano v Ivo Karlovič | 7-5,6-4 |
| US Open | 2018/08/22 22:40 | Tomislav Brkic v Collin Altamirano | 2-6,0-6 |