Head to Head includes singles and doubles results.
| 08/03/21 | Jim Karn over Gregory Clark | 6-3; 6-0 | |
| 07/18/18 | Jim Karn over Gregory Clark | 7-6; 6-1 | |
| 07/25/15 | Jim Karn over Gregory Clark | 6-3; 6-1 | |
| 06/04/15 | Jim Karn over Gregory Clark | 6-4; 7-5 |
