Head to Head includes singles and doubles results.
08/19/21 | Caleb Zimmerman over Frank Heindel | 6-2; 6-1 | |
12/30/20 | Frank Heindel over Caleb Zimmerman | 7-6; 6-3 | |
09/19/20 | Caleb Zimmerman over Frank Heindel | 6-2; 6-2 | |
10/14/19 | Caleb Zimmerman over Frank Heindel | 6-0; 6-3 |