Head to Head includes singles and doubles results.
| 05/22/22 | Guillermo Del Angel over Matthew Sullivan | 7-6; 6-1 | |
| 10/16/21 | Guillermo Del Angel over Matthew Sullivan | 6-2; 6-0 | |
| 07/28/21 | Guillermo Del Angel over Matthew Sullivan | 6-0; 6-1 |
