Donald Young defeated Denis Istomin 6-3 3-6 6-3 in the Washington round of 16 on hard. The upset overturned the form book — Denis Istomin came in leading the head-to-head 2–1, defending last year's round of 32, but Donald Young had been the form player, winning 2 of their last 5 on hard. Donald Young narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-07-03 | Wimbledon | R128 | grass | Donald Young | 5-7 6-4 6-4 4-2 RET |
| 2015-08-23 | Winston-Salem | R64 | hard | Denis Istomin | 6-3 6-3 |
| 2011-03-23 | Miami Masters | R128 | hard | Denis Istomin | 6-4 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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About