Jason Cook defeated Jeff Williams 6-2 6-3 in the USA F26 qualifying round on hard. The upset overturned the form book — Jeff Williams came in leading the head-to-head 1–0. Jason Cook claimed a first win over Jeff Williams in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-09-10 | USA 1 | R32 | hard | Jeff Williams | 7-6(3) 6-2 |