Renata Kolbovic defeated Dawn Buth 6-2 6-2 in the Oklahoma qualifying round on hard. The upset overturned the form book — Dawn Buth came in leading the head-to-head 3–1, but Renata Kolbovic had been the form player, winning 2 of their last 7 on hard. Renata Kolbovic narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-02-19 | Oklahoma City | R32 | carpet | Dawn Buth | 6-1 6-3 |
| 2000-07-31 | Lexington 50K | QF | hard | Dawn Buth | 6-1 6-4 |
| 2000-05-01 | Virginia Beach 25K | R16 | clay | Dawn Buth | 6-4 6-3 |
| 1999-06-07 | Hilton Head 10K | SF | hard | Renata Kolbovic | 7-5 6-2 |