American star Coco Gauff defeated world No. 2 Iga Swiatek 6-3, 6-4 on Tuesday, sealing her spot in the semifinals of the year-end WTA Finals in Riyadh, Saudi Arabia.

Iga Swiatek and Coco Gauff are far from strangers. Swiatek had won 11 of their 12 matches before Tuesday's WTA Finals match. However, it quickly became clear that today's match would be more competitive.

As the WTA Tour Finals round-robin stages progress, Aryna Sabalenka and Coco Gauff have qualified for the semifinals, where they are joined by Zheng Qinwen. Sabalenka was drawn with Jasmine Paolini, Elena Rybakina and Zheng Qinwen in the group stage,