Zarina Diyas defeated Petra Kvitova 6-4 6-2 in the Prague round of 16 on clay. The upset overturned the form book — Petra Kvitova came in leading the head-to-head 2–0, defending last year's round of 32. Zarina Diyas claimed a first win over Petra Kvitova in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-08-20 | New Haven | R16 | hard | Petra Kvitova | 6-1 5-7 6-2 |
| 2014-05-26 | Roland Garros | R128 | clay | Petra Kvitova | 7-5 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