Elena Dementieva defeated Agnieszka Radwanska 6-2 5-7 6-4 in the Sydney quarter-final on hard. The upset overturned the form book — Agnieszka Radwanska came in leading the head-to-head 4–1, but Elena Dementieva had been the form player, winning 2 of their last 5 on hard. Elena Dementieva narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-03-08 | Indian Wells | QF | hard | Agnieszka Radwanska | 6-4 6-3 |
| 2009-10-05 | Beijing | QF | hard | Agnieszka Radwanska | 7-5 6-3 |
| 2008-05-19 | Istanbul | F | clay | Agnieszka Radwanska | 6-3 6-2 |
| 2006-09-25 | Luxembourg | QF | hard | Agnieszka Radwanska | 7-5 6-2 |
| 2006-05-01 | Warsaw | QF | clay | Elena Dementieva | 5-7 6-3 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 (117 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About