Head to Head includes singles and doubles results.
| 09/24/13 | Cliff Kowalczyk over Adrian Flatico | 6-7; 6-3; 7-6 | |
| 08/12/13 | Cliff Kowalczyk over Adrian Flatico | 2-6; 6-4; 6-2 | |
| 07/03/13 | Adrian Flatico over Cliff Kowalczyk | 6-3; 7-5 | |
| 06/11/13 | Adrian Flatico over Cliff Kowalczyk | 6-2; 7-5 | |
| 06/05/13 | Cliff Kowalczyk over Adrian Flatico | 6-4; 3-6; 7-5 | |
| 05/20/13 | Adrian Flatico over Cliff Kowalczyk | 7-5; 7-6 | |
| 05/14/13 | Cliff Kowalczyk over Adrian Flatico | 6-4; 1-6; 6-2 |
