Anna Lena Groenefeld defeated Sara Errani 6-4 6-3 in the Miami round of 64 on hard. The upset overturned the form book — Sara Errani came in leading the head-to-head 1–0, defending last year's round of 32. Anna Lena Groenefeld claimed a first win over Sara Errani in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-07-13 | Palermo | SF | clay | Sara Errani | 6-3 4-6 6-1 |
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 (54 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About