Sergiy Stakhovsky defeated Ivo Karlovic 4-6 7-6 6-2 in the Zagreb round of 32 on hard. The upset overturned the form book — Ivo Karlovic came in leading the head-to-head 4–1, defending last year's round of 16. Sergiy Stakhovsky narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-19 | Vienna | R16 | hard | Ivo Karlovic | 6-4 7-5 |
| 2014-07-07 | Newport | R16 | grass | Ivo Karlovic | 7-5 7-6(3) |
| 2012-01-02 | Doha | R32 | hard | Ivo Karlovic | 6-7(1) 6-2 7-6(3) |
| 2009-03-12 | Indian Wells Masters | R64 | hard | Ivo Karlovic | 6-4 6-2 |
| 2009-02-02 | Zagreb | R16 | hard | Sergiy Stakhovsky | 6-4 3-6 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