Head to Head includes singles and doubles results.
| 07/08/09 | William Gunther over Petar Canic | 3-6; 7-6; 6-2 | |
| 06/28/09 | Petar Canic over William Gunther | 7-5; 7-5 | |
| 08/24/08 | William Gunther over Petar Canic | 6-4; 6-2 | |
| 07/24/08 | William Gunther over Petar Canic | 6-2; 6-6; 7-3 |
