Gilles Simon defeated Ivo Karlovic 7-6 4-6 7-6 in the Madrid Masters quarter-final on clay. The upset overturned the form book — Ivo Karlovic came in leading the head-to-head 3–0, defending last year's round of 16. Gilles Simon claimed a first win over Ivo Karlovic in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-08-16 | Cincinnati Masters | R64 | hard | Ivo Karlovic | 6-4 6-7 6-3 |
| 2011-03-10 | Indian Wells Masters | R32 | hard | Ivo Karlovic | 6-3 6-3 |
| 2007-06-18 | Nottingham | R16 | grass | Ivo Karlovic | 7-6 6-7 6-4 |
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
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About