Leonardo Mayer defeated Donald Young 6-4 6-4 in the Stockholm round of 32 on hard. The upset overturned the form book — Donald Young came in leading the head-to-head 2–1. Leonardo Mayer narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-03-19 | Miami Masters | R128 | hard | Leonardo Mayer | 3-6 6-4 6-2 |
| 2016-06-27 | Wimbledon | R128 | grass | Donald Young | 6-4 7-5 3-6 6-3 |
| 2012-08-19 | Winston-Salem | R64 | hard | Donald Young | 4-6 6-3 6-2 |
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 (200 vs 200). ATP, WTA & Challenger.