Ivo Karlovic defeated Ernests Gulbis 7-6 7-6 in the Pune quarter-final on hard. The upset overturned the form book — Ernests Gulbis came in leading the head-to-head 3–1, defending last year's quarter-final, but Ivo Karlovic had been the form player, winning 7 of their last 9 on hard. Ivo Karlovic narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-12-31 | Pune | QF | hard | Ivo Karlovic | 7-6 7-6 |
| 2016-05-09 | Rome Masters | R64 | clay | Ernests Gulbis | 6-7 6-2 6-3 |
| 2015-10-19 | Vienna | QF | hard | Ernests Gulbis | 7-6 7-6 |
| 2010-02-22 | Delray Beach | F | hard | Ernests Gulbis | 6-2 6-3 |
Averages over each player's completed matches in the selected window (48 vs 113). 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