Zi Yang defeated Wen Hsin Hsu 6-3 2-6 6-3 in the Tsukuba 25K round of 16 on hard. The upset overturned the form book — Wen Hsin Hsu came in leading the head-to-head 1–0, but Zi Yang had been the form player, winning 2 of their last 6 on hard. Zi Yang claimed a first win over Wen Hsin Hsu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-08 | Taipei 10K | R16 | hard | Wen Hsin Hsu | 6-2 6-1 |
Averages over each player's completed matches in the selected window (4 vs 2). 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