
Kiki Bertens defeated Sloane Stephens 6-2 7-5 in the Madrid semi-final on clay. The upset overturned the form book — Sloane Stephens came in leading the head-to-head 2–0, defending last year's round of 16. Kiki Bertens claimed a first win over Sloane Stephens in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-10-22 | Singapore | RR | hard | Sloane Stephens | 7-6(4) 2-6 6-3 |
| 2013-05-13 | Rome | R32 | clay | Sloane Stephens | 4-6 6-3 6-2 |
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 (108 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About