Amanda Anisimova defeated Iga Swiatek 6-7 6-4 6-2 in the WTA Finals round robin on hard. The upset overturned the form book — Iga Swiatek came in ranked #9, defending last year's round-robin. Amanda Anisimova moved ahead in the head-to-head, 2–1.
Anisimova A. came through in three sets.
Anisimova A. and Swiatek I. faced 22 of the same opponents in the last 12 months. Anisimova A. went 19–8 (70%) against them, Swiatek I. 33–11 (75%). Results against comparable opponents are close (7 : 5 better-results split).
Hard: Anisimova A. leads 2–0 · Grass: Swiatek I. leads 1–0
Amanda Anisimova beat Iga Swiatek 6-7(3) 6-4 6-2. Umpiry, "Amanda Anisimova vs Iga Swiatek — WTA Finals Round Robin", https://umpiry.com/match/2025-11-05/anisimova-vs-swiatek-wta-finals-rr?utm_source=cite (as of 5 November 2025).