
Marin Cilic defeated Ernests Gulbis 6-4 6-4 in the St. Petersburg quarter-final on carpet. The result followed the form book — Marin Cilic came in leading the head-to-head 2–1, defending last year's round of 32. Marin Cilic extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-05-29 | Roland Garros | R128 | clay | Marin Cilic | 6-3 6-3 6-3 |
| 2016-05-16 | Geneva | R16 | clay | Marin Cilic | 6-4 7-6(5) |
| 2014-05-04 | Madrid Masters | R16 | clay | Ernests Gulbis | 6-3 6-4 |
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 (199 vs 200). ATP, WTA & Challenger.