Lukas Lacko defeated Robin Haase 6-4 6-4 in the Zagreb quarter-final on hard. The upset overturned the form book — Robin Haase came in leading the head-to-head 3–0. Lukas Lacko claimed a first win over Robin Haase in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-18 | Miami Masters | R128 | hard | Robin Haase | 6-2 6-4 |
| 2018-01-08 | Auckland | R16 | hard | Robin Haase | 7-6(4) 6-3 |
| 2015-03-25 | Miami Masters | Q2 | hard | Robin Haase | 7-5 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 (200 vs 200). ATP, WTA & Challenger.