Caroline Wozniacki defeated Vera Zvonareva 7-5 6-0 in the WTA Championships semi-final on hard. The upset overturned the form book — Vera Zvonareva came in leading the head-to-head 6–2. Caroline Wozniacki narrowed the head-to-head to 6–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-10-24 | WTA Championships | RR | hard | Vera Zvonareva | 6-2 4-6 6-3 |
| 2011-02-21 | Doha | F | hard | Vera Zvonareva | 6-4 6-4 |
| 2010-10-04 | Beijing | F | hard | Caroline Wozniacki | 6-3 3-6 6-3 |
| 2010-08-30 | US Open | SF | hard | Vera Zvonareva | 6-4 6-3 |
| 2010-08-16 | Montreal | F | hard | Caroline Wozniacki | 6-3 6-2 |
| 2010-04-12 | Charleston | SF | clay | Vera Zvonareva | 5-2 RET |
| 2009-10-26 | WTA Tour Championships | RR | carpet | Vera Zvonareva | 6-0 6-7(3) 6-4 |
| 2009-03-09 | Indian Wells | QF | hard | Vera Zvonareva | 6-4 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 (199 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About