Samantha Stosur defeated Lara Arruabarrena 6-3 6-4 in the Mallorca round of 16 on grass. The upset overturned the form book — Lara Arruabarrena came in leading the head-to-head 2–0. Samantha Stosur claimed a first win over Lara Arruabarrena in three meetings, narrowing the head-to-head to 2–1.
Stosur S. took it in straight sets.
Stosur S. and Arruabarrena L. faced 7 of the same opponents in the last 12 months. Stosur S. went 2–6 (25%) against them, Arruabarrena L. 3–4 (43%). Only 1 of the comparisons are context-comparable — too few for a conclusion.
Grass: Stosur S. leads 1–0 · Clay: Arruabarrena L. leads 2–0
Samantha Stosur beat Lara Arruabarrena 6-3 6-4. Umpiry, "Samantha Stosur vs Lara Arruabarrena — Mallorca Round of 16", https://umpiry.com/match/2018-06-18/arruabarrena-vs-stosur-mallorca-r16?utm_source=cite (as of 18 June 2018).