Mari Tanaka defeated Chen Liang 7-6 6-0 in the Seogwipo 10K round of 16 on hard. The upset overturned the form book — Chen Liang came in leading the head-to-head 1–0. Mari Tanaka claimed a first win over Chen Liang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-27 | Pattaya 10K | QF | hard | Chen Liang | 2-6 7-5 6-3 |
Averages over each player's completed matches in the selected window (3 vs 1). 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. Small sample — read as indicative. About