Jeff Williams defeated Mirko Pehar 7-5 6-1 in the USA F26 round of 32 on hard. The upset overturned the form book — Mirko Pehar came in leading the head-to-head 2–1. Jeff Williams narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-07-08 | Newport | Q32 | grass | Mirko Pehar | 7-6(5) 6-1 |
| 2002-02-25 | USA F5 | R16 | hard | Jeff Williams | 7-6(7) 6-2 |
| 2001-07-16 | USA F18 | R32 | hard | Mirko Pehar | 7-6(2) 2-0 |