Lara Arruabarrena defeated Samantha Stosur 6-3 3-6 6-4 in the Charleston round of 32 on clay. The upset overturned the form book — Samantha Stosur came in defending last year's round of 16. Lara Arruabarrena extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-06-18 | Mallorca | R16 | grass | Samantha Stosur | 6-3 6-4 |
| 2015-07-13 | Bastad | R16 | clay | Lara Arruabarrena | 7-6(5) 6-0 |
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 197). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About