Coco Gauff secured her place in the WTA Finals semi-finals with a stunning victory over defending champion Iga Swiatek, winning 6-3, 6-4 in Riyadh. This victory marks only the second time Gauff has triumphed against Swiatek in 13 matchups, showcasing her growing confidence as she aims for top honors. With this defeat, Swiatek can no longer vie for the year-end world number one position, which has been claimed by Aryna Sabalenka. Meanwhile, Jessica Pegula was eliminated from the tournament after a loss to Barbora Krejcikova.