Julia Vakulenko defeated Kim Clijsters 7-6 6-3 in the Warsaw round of 16 on clay. The upset overturned the form book — Kim Clijsters came in leading the head-to-head 1–0, defending the title. Julia Vakulenko claimed a first win over Kim Clijsters in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-01 | Warsaw | R16 | clay | Kim Clijsters | 6-3 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (47 vs 124). ATP, WTA & Challenger.