
Naomi Osaka faces Alexandra Eala in the Washington semi-final on hard. Naomi Osaka holds the paper edge — ranked #13, a roughly 90-point hard Elo advantage.
Clear favourite · Osaka N. clearly ahead, but no certainty
Calibrated model · 65% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
Averages over each player's completed matches in the selected window (27 vs 40). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
No previous meetings on record.
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About