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.

Coco Gauff beat defending champion Iga Swiatek 6-3 6-4 at the WTA Finals in Riyadh on Tuesday to reach the semi-finals and ensure Aryna Sabalenka would finish the year as world number one.