Jason Jung defeated Donald Young 6-3 6-7 7-5 in the US Open q128 on hard. The upset overturned the form book — Donald Young came in defending last year's round of 128. Jason Jung extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2020-01-14 | Australian Open | Q128 | hard | Jason Jung | 6-4 6-7(8) 6-1 |
| 2018-07-29 | Washington | Q16 | hard | Donald Young | 5-7 7-5 1-0 |
Averages over each player's completed matches in the selected window (200 vs 24). ATP, WTA & Challenger.
wins 59% of points on serve vs Jung J.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About