Round: 60 Ground: Hardcourt outdoor
| ITF USA F10 Qual | 2018/04/09 15:00 | Charles Sullivan v Christopher G Haworth | 1-6,4-6 |
| ITF USA F10 Qual | 2018/04/08 16:00 | Charles Sullivan v Darryl Hale | 6-2,6-4 |
| ITF USA F9 Qual | 2018/04/02 15:45 | Ryan Peniston v Charles Sullivan | 6-0,6-1 |
| ITF USA F9 Qual | 2018/04/01 16:30 | Nicholas Shamma v Charles Sullivan | 3-6,2-6 |
| ITF USA F9 Qual | 2018/03/31 17:30 | Charles Sullivan v Vlad Andrei Dancu | 3-6,6-2,6-0 |
| ITF USA F5 | 2018/01/19 17:00 | Ritik Sundaram v Charles Sullivan | 6-2,6-2 |
| ITF USA F4 | 2018/01/13 17:00 | Charles Sullivan v Rowland Phillips | 6-0,3-6,1-6 |
| ITF USA F22 | 2017/06/25 15:00 | Dejon Bivens v Charles Sullivan | 6-3,6-4 |
| ITF USA F10 Qual | 2018/04/08 17:30 | Alexander Ritschard v Marcelo Sepulveda | 6-3,6-0 |
| ITF USA F3 Qual | 2018/01/07 16:00 | Trent Bryde v Marcelo Sepulveda | 6-4,7-5 |
| ITF USA F3 Qual | 2018/01/06 16:00 | Marcelo Sepulveda v Malik Bhatnagar | 4-6,6-4,7-6 |
| Challenger Monterrey Qual | 2017/09/30 18:30 | Eduardo Dischinger v Marcelo Sepulveda | 7-6,6-1 |