Sam Querrey defeated Evgeny Korolev 6-3 6-4 in the Belgrade round of 16 on hard. The upset overturned the form book — Evgeny Korolev came in leading the head-to-head 2–0. Sam Querrey claimed a first win over Evgeny Korolev in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-01-11 | Sydney | R32 | hard | Evgeny Korolev | 6-2 5-7 6-4 |
| 2007-02-26 | Las Vegas | QF | hard | Evgeny Korolev | 6-4 6-4 |
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 46). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About