Serena Williams defeated Aleksandra Wozniak 6-1 6-2 in the Roland Garros round of 16 on clay. The upset overturned the form book — Aleksandra Wozniak came in leading the head-to-head 1–0, defending last year's round of 32. Serena Williams claimed a first win over Aleksandra Wozniak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-07-14 | Stanford | SF | hard | Aleksandra Wozniak | 6-2 3-1 RET |
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 (199 vs 175). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About