Shuai Zhang defeated Kayla Day in the Round of 128 at the Cincinnati tournament, coming back from a set down to win 2-6, 6-2, 6-2. Zhang served zero aces and committed two double faults, while Day served eight aces and made five double faults. Zhang converted 33% of her break points and broke Day's serve four times, compared to Day's two service breaks and 67% break point conversion rate.
No previous meetings on record.
Averages over each player's completed matches in the selected window (40 vs 44). ATP, WTA & Challenger.
Slight edge · Day K. narrowly ahead
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.
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