
Claire Liu defeated Marta Kostyuk 4-6 6-4 6-3 in the Melbourne 2 round of 32 on hard. The upset overturned the form book — Marta Kostyuk came in ranked #13, leading the head-to-head 2–0. Claire Liu claimed a first win over Marta Kostyuk in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-01-15 | Australian Open | R128 | hard | Marta Kostyuk | 6-3 4-6 6-1 |
| 2023-05-08 | Rome | R64 | clay | Marta Kostyuk | 6-0 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
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (188 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Liu C.: 4 days rest · 1 match, 18 games (7d) · Kostyuk M.: 2 days rest · 4 matches, 82 games (7d). Higher means fresher. About