Carina Witthoeft defeated Kiki Bertens 6-1 6-2 in the Luxembourg quarter-final on hard. The upset overturned the form book — Kiki Bertens came in leading the head-to-head 1–0, defending last year's semi-final, but Carina Witthoeft had been the form player, winning 1 of their last 4 on hard. Carina Witthoeft claimed a first win over Kiki Bertens in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-07-24 | Bastad | R32 | clay | Kiki Bertens | 6-1 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 (84 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About