Stadium: Court 18 Round: 25 Ground: Hardcourt outdoor
| ITF Mexico F1 | 2018/05/06 16:00 | Alexander Merino v Marcelo Sepulveda | 6-2,5-7,6-3 |
| ITF Mexico F1 | 2018/05/05 16:00 | Marcelo Sepulveda v Conner McMann | 4-6,6-3,6-1 |
| Challenger Puerto Vallarta | 2018/05/01 00:45 | Marcelo Sepulveda v Santiago Giraldo | 2-6,0-6 |
| ITF USA F12 | 2018/04/22 17:00 | Marcelo Sepulveda v Julian Bradley | 6-7,7-6,3-6 |
| ITF USA F12 | 2018/04/20 12:00 | Marcelo Sepulveda v Yang Liu | 6-2,6-2 |
| ITF USA F11 | 2018/04/16 14:00 | Christopher G Haworth v Marcelo Sepulveda | 4-6,6-1,6-4 |
| ITF USA F11 | 2018/04/15 12:00 | Charles Sullivan v Marcelo Sepulveda | 2-6,3-6 |
| ITF USA F10 Qual | 2018/04/08 17:30 | Alexander Ritschard v Marcelo Sepulveda | 6-3,6-0 |
| ITF Mexico F1 | 2018/05/08 21:25 | Samuel Shropshire v Jack Findel-Hawkins | 6-7,6-3,5-7 |
| ITF Mexico F1 | 2018/05/07 15:00 | Samuel Shropshire v Guillermo Castaneda | 6-0,6-1 |
| ITF Mexico F1 | 2018/05/06 15:00 | Samuel Shropshire v Alan Magadan | 7-6,6-1 |
| ITF Mexico F1 | 2018/05/05 15:00 | Samuel Shropshire v Mario Urquidi | 6-1,6-2 |
| Challenger Sarasota Qual | 2018/04/14 21:00 | Jan Choinski v Samuel Shropshire | 7-5,3-6,6-3 |
| Challenger Sarasota Qual | 2018/04/14 16:20 | Robert Galloway v Samuel Shropshire | 2-6,2-6 |
| ITF USA F10 | 2018/04/11 18:40 | Sam Riffice v Samuel Shropshire | 6-2,6-0 |
| ITF USA F10 Qual | 2018/04/10 16:40 | Samuel Shropshire v Nevin Arimilli | 7-5,6-2 |