Ya Nan Ma defeated Bowen Ouyang 6-4 6-2 in the China F1 round of 32 on hard. The upset overturned the form book — Bowen Ouyang came in leading the head-to-head 1–0. Ya Nan Ma claimed a first win over Bowen Ouyang in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-04-18 | China F4 | R32 | hard | Bowen Ouyang | 6-4 3-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.