Round: 28 Ground: Hardcourt outdoor
| US Open Qual | 2014/08/21 23:00 | Ricardas Berankis v Collin Altamirano | 2-6,6-1,6-1 |
| US Open Qual | 2014/08/20 15:00 | Luca Vanni v Collin Altamirano | 4-6,2-6 |
| ITF USA F19 Qual | 2014/06/30 15:00 | Collin Altamirano v Francisco Dias | 7-6,6-3 |
| ITF USA F17 | 2014/06/27 15:00 | Collin Altamirano v Jared Donaldson | 2-6,1-6 |
| ITF USA F17 | 2014/06/24 17:30 | Sanam Singh v Collin Altamirano | 3-6,1-6 |
| ITF USA F15 | 2014/06/19 22:10 | Collin Altamirano v Dennis Nevolo | 4-6,2-6 |
| ITF USA F15 | 2014/06/17 15:50 | Collin Altamirano v Martin Redlicki | 4-6,6-2,6-4 |
| ITF Spain F10 | 2014/05/23 11:00 | Noah Rubin v Collin Altamirano | 4-6,6-2,6-3 |
| ITF USA F11 | 2015/03/29 00:15 | Mackenzie McDonald v Dennis Novikov | 6-4,3-6,2-6 |
| ITF USA F11 | 2015/03/28 03:55 | Mackenzie McDonald v Clay Thompson | 6-2,4-6,6-3 |
| ITF USA F11 | 2015/03/26 19:05 | Mackenzie McDonald v Mico Santiago | 3-6,6-3,6-1 |
| ITF USA F11 | 2015/03/25 21:20 | Connor Smith v Mackenzie McDonald | 2-6,5-7 |
| ITF USA F11 Qual | 2015/03/23 17:00 | Mackenzie McDonald v Lucas Renard | 3-6,6-3,6-4 |
| ITF USA F11 Qual | 2015/03/22 19:00 | Mackenzie McDonald v Nathan Ponwith | 6-2,6-2 |
| ITF USA F4 | 2015/01/15 18:00 | Mackenzie McDonald v Frederik Nielsen | 6-7,4-6 |
| ITF USA F4 | 2015/01/14 22:10 | Philip Orno v Mackenzie McDonald | 2-6,1-6 |