Head to Head includes singles and doubles results.
| 06/19/21 | Matthew Christian over Tomas Guillen | 6-4; 4-6; 6-4 | |
| 05/30/21 | Tomas Guillen over Matthew Christian |
6-4; 1-6; TB 10-6 |
|
| 02/25/21 | Tomas Guillen over Matthew Christian | 6-3; 6-3 | |
| 09/16/20 | Matthew Christian over Tomas Guillen | 6-1; 7-5 |
