
Hyeon Chung defeated Alexander Zverev 5-7 7-6 2-6 6-3 6-0 in the Australian Open round of 32 on hard. The upset overturned the form book — Alexander Zverev came in ranked #2, defending last year's round of 32. Hyeon Chung extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-04-30 | Munich | SF | clay | Alexander Zverev | 7-5 6-2 |
| 2017-04-24 | Barcelona | R16 | clay | Hyeon Chung | 6-1 6-4 |
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
Averages over each player's completed matches in the selected window (136 vs 199). ATP, WTA & Challenger.