Donald Young defeated Ivo Karlovic 7-6 7-6 in the Delray Beach round of 32 on hard. The upset overturned the form book — Ivo Karlovic came in leading the head-to-head 2–1, defending last year's round of 32. Donald Young narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-23 | Atlanta | R32 | hard | Donald Young | 2-6 7-6(5) 7-6(6) |
| 2016-08-29 | US Open | R64 | hard | Ivo Karlovic | 6-4 7-6(4) 6-4 |
| 2015-02-16 | Delray Beach | F | hard | Ivo Karlovic | 6-3 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 153). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Young D.: 2 days rest · 1 match, 21 games (7d). Higher means fresher. About