Gauff's Win, Swiatek Out; Sabalenka No. 1

Defending WTA Finals champion Iga Swiatek was eliminated after Barbora Krejcikova defeated Coco Gauff, ensuring Swiatek would not advance to the semifinals despite her win over Daria Kasatkina. Gauff secured her semifinal spot after defeating Swiatek, marking her second victory over the Pole in 13 attempts. Aryna Sabalenka is confirmed as the year-end world No. 1 following Swiatek's loss. Krejcikova's win over Jessica Pegula, who withdrew from the tournament due to injury, was crucial for her own advancement. Gauff will meet Sabalenka in the semifinals, while Krejcikova will face Olympic champion Zheng Qinwen. Swiatek's struggles in Riyadh have been partly attributed to adjusting to a new coach and a two-month break from competition.