Head to Head includes singles and doubles results.
| 11/24/19 | David Koller over Enrique Gallego | 7-5; 7-6 | |
| 11/01/15 | David Koller over Enrique Gallego | 10-8 | |
| 10/09/14 | David Koller over Enrique Gallego |
6-3; 4-6; TB 10-8 |
|
| 09/27/14 | David Koller over Enrique Gallego |
6-2; 5-7; TB 13-11 |
