Head to Head includes singles and doubles results.
| 06/22/15 | Cliff Kowalczyk over Alexios Marountas | 7-5; 6-2 | |
| 05/10/15 | Cliff Kowalczyk over Alexios Marountas | 7-5; 6-1 | |
| 09/04/14 | Cliff Kowalczyk over Alexios Marountas | 6-1; 6-3 | |
| 09/05/14 | Cliff Kowalczyk over Alexios Marountas | 6-3; 6-4 | |
| 07/02/14 | Cliff Kowalczyk over Alexios Marountas | 6-4; 5-7; 6-2 | |
| 07/31/13 | Cliff Kowalczyk over Alexios Marountas | 6-0; 6-2 |
