
Ann Li defeated Maria Camila Osorio Serrano 6-4 6-7 7-5 in the Australian Open round of 128 on hard. The upset overturned the form book — Maria Camila Osorio Serrano came in leading the head-to-head 2–0, defending last year's round of 64. Ann Li claimed a first win over Maria Camila Osorio Serrano in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-09-25 | Beijing | R128 | hard | Maria Camila Osorio Serrano | 7-5 6-7(5) 7-5 |
| 2022-08-29 | US Open | R128 | hard | Maria Camila Osorio Serrano | 1-6 6-3 6-1 |
Averages over each player's completed matches in the selected window (33 vs 21). ATP, WTA & Challenger.
wins 61% of points on serve vs Li A.
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