Martin Klizan defeated Robin Haase 7-5 6-1 in the Casablanca quarter-final on clay. The upset overturned the form book — Robin Haase came in leading the head-to-head 3–1, defending last year's round of 32. Martin Klizan narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-07-16 | Umag | R16 | clay | Robin Haase | 3-6 6-4 6-3 |
| 2014-05-26 | Roland Garros | R64 | clay | Martin Klizan | 6-1 3-6 6-1 1-6 7-5 |
| 2013-02-04 | Zagreb | R16 | hard | Robin Haase | 6-2 4-6 6-4 |
| 2012-07-22 | Kitzbuhel | SF | clay | Robin Haase | 6-3 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.