Ivo Karlovic defeated Donald Young 6-4 7-6 6-4 in the US Open round of 64 on hard. The result followed the form book — Ivo Karlovic came in leading the head-to-head 2–1, defending last year's round of 64. Ivo Karlovic extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-02-21 | Delray Beach | R32 | hard | Donald Young | 7-6(5) 7-6(3) |
| 2015-02-22 | Delray Beach | F | hard | Ivo Karlovic | 6-3 6-3 |
| 2011-04-04 | Houston | QF | clay | Ivo Karlovic | 6-4 6-4 |
Averages over each player's completed matches in the selected window (200 vs 106). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
wins 73% of points on serve vs Karlovic I.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About