Head to Head includes singles and doubles results.
| 12/29/23 | Michael Sandler over John Sullivan | 6-4; 2-6; 6-2 | |
| 12/20/23 | Michael Sandler over John Sullivan | 6-2; 4-6; 6-3 | |
| 10/26/23 | Michael Sandler over John Sullivan | 6-4; 6-2 | |
| 10/01/23 | Michael Sandler over John Sullivan | 6-4; 7-5 |
