Jason Jung defeated Zhizhen Zhang 6-4 6-4 in the Zhangjiagang CH round of 16 on hard. The upset overturned the form book — Zhizhen Zhang came in ranked #158, defending last year's round of 32. Jason Jung extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-11 | USA F15 | R32 | hard | Jason Jung | 6-3 7-6(5) |
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