J J Wolf defeated Zhizhen Zhang in the Round of 32 of the Vancouver hard-court tournament, winning 7-6, 3-6, 6-4. Wolf served 14 aces to Zhang's 12 and converted all of his break points, while Zhang converted 40%. Both players earned two service breaks apiece.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-08-28 | US Open | R128 | hard | Zhizhen Zhang | 7-5 7-5 6-7 4-6 6-3 |
Averages over each player's completed matches in the selected window (4 vs 28). ATP, WTA & Challenger.
Toss-up · Too close to call
Calibrated model · 63% 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