[178] Jay Clarke 5-7,0-6 Collin Altamirano [298] 2018-10-15 18:40
Stadium: National Bank Court Round: 25 Ground: Hardcourt indoor
Home History
| Challenger Fairfield | 2018/10/09 23:50 | Jordan Thompson v Jay Clarke | 7-6,6-1 |
| Challenger Stockton | 2018/10/01 22:00 | Marc Polmans v Jay Clarke | 6-3,6-0 |
| Challenger Tiburon | 2018/09/24 18:35 | Jay Clarke v JC Aragone | 2-6,6-7 |
| US Open | 2018/08/22 15:00 | Liam Broady v Jay Clarke | 6-3,6-1 |
| Challenger Aptos | 2018/08/09 20:35 | Jay Clarke v Liam Broady | 6-7,4-6 |
| Challenger Aptos | 2018/08/07 17:00 | Jay Clarke v Illya Marchenko | 6-3,2-6,6-3 |
| Challenger Lexington | 2018/08/03 00:45 | Andrew Harris v Jay Clarke | 3-6,3-6 |
| Challenger Lexington | 2018/07/31 22:10 | Edan Leshem v Jay Clarke | 4-6,4-6 |
Away History
| 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 Karlovic | 7-5,6-4 |
| US Open | 2018/08/22 22:40 | Tomislav Brkic v Collin Altamirano | 2-6,0-6 |
| Challenger Lexington | 2018/08/01 15:10 | Joao Menezes v Collin Altamirano | 3-6,4-6 |
| Challenger Lexington | 2018/07/31 01:35 | Hugo Grenier v Collin Altamirano | 7-6,6-7,4-6 |