Head to Head includes singles and doubles results.
| 06/12/19 | Jason Williams over Ryan Pietsch | 6-3; 7-6 | |
| 05/20/19 | Jason Williams over Ryan Pietsch | 6-3; 6-1 | |
| 09/19/18 | Jason Williams over Ryan Pietsch | 6-4; 3-6; 6-3 | |
| 08/01/18 | Jason Williams over Ryan Pietsch | 6-4; 6-1 |
