Donald Young defeated Martin Klizan 6-1 6-0 6-1 in the US Open round of 128 on hard. The upset overturned the form book — Martin Klizan came in leading the head-to-head 1–0, defending last year's round of 16. Donald Young claimed a first win over Martin Klizan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-06-16 | Eastbourne | R16 | grass | Martin Klizan | 7-6(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.