Donald Young defeated Leonardo Mayer 4-6 6-3 6-2 in the Winston-Salem round of 64 on hard. The upset overturned the form book — Leonardo Mayer came in leading the head-to-head 2–1. Donald Young 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 |
| 2014-10-13 | Stockholm | R32 | hard | Leonardo Mayer | 6-4 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
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.