Katerina Siniakova defeated Anna Kalinskaya 4-6 6-3 6-2 in the St. Petersburg qualifying round 1 on hard. The upset overturned the form book — Anna Kalinskaya came in ranked #21, leading the head-to-head 3–0. Katerina Siniakova claimed a first win over Anna Kalinskaya in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-05-07 | Rome | R64 | clay | Anna Kalinskaya | 4-6 7-6(4) 7-5 |
| 2024-08-12 | Cincinnati | R64 | hard | Anna Kalinskaya | 1-6 6-2 6-3 |
| 2023-08-28 | US Open | R128 | hard | Anna Kalinskaya | 6-4 6-2 |
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Siniakova K.: 1 day rest · 2 matches, 43 games (7d) · Kalinskaya A.: 2 days rest · 2 matches, 44 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About