Vlada Koval defeated Valeria Savinykh 6-3 6-3 in the W25 Nur-Sultan quarter-final on hard. The upset overturned the form book — Valeria Savinykh came in leading the head-to-head 1–0. Vlada Koval claimed a first win over Valeria Savinykh in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-03-10 | W25 Kazan | R32 | hard | Valeria Savinykh | 6-2 1-6 7-6(3) |
Averages over each player's completed matches in the selected window (1 vs 70). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About