Petra Martic defeated Shuai Zhang 4-6 6-4 6-4 in the US Open q64 on hard. The upset overturned the form book — Shuai Zhang came in ranked #57, leading the head-to-head 2–1, defending last year's round of 128. Petra Martic narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-01-16 | Australian Open | R64 | hard | Shuai Zhang | 6-3 6-3 |
| 2022-09-19 | Tokyo | QF | hard | Shuai Zhang | 7-5 6-2 |
| 2019-03-18 | Miami | R128 | hard | Petra Martic | 6-2 6-1 |
Averages over each player's completed matches in the selected window (200 vs 200). 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
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About