Head to Head includes singles and doubles results.
| 04/27/14 | Bob Hacker over Keith Pietsch | 6-4; 6-2 | |
| 05/12/12 | Bob Hacker over Keith Pietsch | 6-0; 6-0 | |
| 10/15/11 | Bob Hacker over Keith Pietsch | 6-0; 6-3 | |
| 09/08/11 | Bob Hacker over Keith Pietsch | 6-3; 7-5 | |
| 07/09/11 | Bob Hacker over Keith Pietsch | 6-0; 6-2 |
