(Reuters) -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. It was Gauff's second win over Swiatek in 13 meetings.

Coco Gauff earned her second career win over Iga Swiatek on Tuesday, winning in straight sets to reach the semifinals of the WTA Finals.

Coco Gauff will face world No. 2 Iga Swiatek in an exciting clash at the year-end WTA Finals in Riyadh on Tuesday, as the American star looks to build on her solid form.