Head to Head includes singles and doubles results.
| 05/30/21 | Alexander Kostal over Broderick Tuomi | 6-3; 6-2 | |
| 10/09/19 | Broderick Tuomi over Alexander Kostal | 7-6; 6-2 | |
| 08/29/19 | Broderick Tuomi over Alexander Kostal | 6-2; 7-6 |
