Amanda Anisimova defeated Marta Kostyuk 4-6 7-5 6-4 in the Doha quarter-final on hard. The upset overturned the form book — Marta Kostyuk came in leading the head-to-head 2–0, defending last year's round of 32. Amanda Anisimova claimed a first win over Marta Kostyuk in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-01-04 | Brisbane | R16 | hard | Marta Kostyuk | 6-4 6-3 |
| 2023-01-16 | Australian Open | R128 | hard | Marta Kostyuk | 6-3 6-4 |
Averages over each player's completed matches in the selected window (93 vs 74). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Anisimova A.: 1 day rest · 3 matches, 62 games (7d) · Kostyuk M.: 1 day rest · 3 matches, 79 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