Head to Head includes singles and doubles results.
| 05/15/13 | Jayjay Siazon over John Harambasic | 6-3; 6-3 | |
| 05/08/13 | John Harambasic over Jayjay Siazon | 6-3; 6-4 | |
| 06/20/12 | Jayjay Siazon over John Harambasic |
2-6; 6-2; TB 10-7 |
|
| 11/24/11 | Jayjay Siazon over John Harambasic | 4-6; 6-3; 6-1 | |
| 10/23/11 | John Harambasic over Jayjay Siazon | 6-0; 7-6 | |
| 08/28/11 | Jayjay Siazon over John Harambasic | 6-3; 6-4 |
