Hyeon Chung defeated Sebastian Ofner 6-3 6-3 in the Us Open qualifying round 1 on hard. The upset overturned the form book — Sebastian Ofner came in ranked #125. Hyeon Chung extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-08-26 | US Open | Q1 | hard | Hyeon Chung | 6-3 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (88 vs 200). ATP, WTA & Challenger.