Polona Hercog defeated Vera Zvonareva 6-1 6-1 in the Indian Wells round of 128 on hard. The upset overturned the form book — Vera Zvonareva came in leading the head-to-head 1–0, defending last year's round of 128. Polona Hercog claimed a first win over Vera Zvonareva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-04-19 | Istanbul | R32 | clay | Vera Zvonareva | 6-3 6-3 |
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 (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About