Iga Swiatek defeated Aryna Sabalenka 6-3 6-2 in the WTA Finals semi-final on hard. The upset overturned the form book — Aryna Sabalenka came in ranked #2, defending last year's final. Iga Swiatek extended the head-to-head to 6–5.
Swiatek I. took it in straight sets.
Swiatek I. and Sabalenka A. faced 21 of the same opponents in the last 12 months. Swiatek I. went 30–8 (79%) against them, Sabalenka A. 21–11 (66%). Results against comparable opponents are close (7 : 4 better-results split).
Hard: level 4–4 · Clay: Swiatek I. leads 2–1