
Aryna Sabalenka faces Maria Camila Osorio Serrano in the US Open round of 128 on hard. Aryna Sabalenka holds the paper edge — ranked #1, leading the head-to-head 1–0, defending the title.
Strong favourite · Sabalenka A. heavily favoured
Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
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.
Averages over each player's completed matches in the selected window (39 vs 22). ATP, WTA & Challenger.
wins 59% of points on serve vs Sabalenka A.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Sabalenka A.: 9 days rest · 4 matches (14d) · Camila Osorio Serrano M.: 4 days rest · 1 match, 15 games (7d). Higher means fresher. About
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-02 | Wimbledon | R32 | grass | Aryna Sabalenka | 6-0 6-3 |
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About