Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| 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 |
| 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 |
| Challenger Pune | 2018/11/19 06:30 | Lucas Gerch v Benjamin Hassan | 6-4,6-0 |
| Challenger Pune | 2018/11/18 08:25 | Lucas Gerch v Miliaan Niesten | 3-6,6-4,6-4 |
| Challenger Pune | 2018/11/17 08:25 | Zsombor Piros v Lucas Gerch | 6-4,2-6,3-6 |
| Challenger Bangalore | 2018/11/11 07:00 | Lucas Gerch v Mukund Sasikumar | 1-6,4-6 |
| Challenger Bangalore | 2018/11/10 10:35 | Nitin Kumar Sinha v Lucas Gerch | 3-6,4-6 |
| ITF Thailand F8 | 2018/11/06 05:30 | Lucas Gerch v Sora Fukuda | 5-7,4-6 |
| ITF Thailand F8 | 2018/11/05 02:00 | Lucas Gerch v Vladislav Dubinsky | 6-4,6-2 |
| ITF Thailand F8 | 2018/11/04 02:00 | Lucas Gerch v Linh Giang Trinh | 6-7,6-4,6-1 |