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.

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 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.

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.

RIYADH, Saudi Arabia — Aryna Sabalenka clinched the year-end No. 1 spot in the women's rankings for the first time when Iga Swiatek lost at the WTA Finals on Tuesday.

Iga Swiatek and Coco Gauff enjoyed winning starts to their WTA Finals campaigns in Riyadh on Sunday, albeit in contrasting fashion.

Coco Gauff claimed just a second win in 13 meetings against Iga Swiatek to book her spot in the semi-finals of the WTA Finals in Saudi Arabia. The American’s 6-3 6-4 victory also ensures Aryna Sabalenka will finish the year as world number one, with defending champion Swiatek no longer able to overtake the Australian Open and US Open winner.

The season-ending event sees Sabalenka and Swiatek battle for year-end world No. 1 for the second year in a row

From start to finish, Aryna Sabalenka was the best tennis player this year. Sabalenka's dominant season was bookmarked with Australian Open and US Open titles, with plenty of winning in between. While she is still competing in the WTA Finals in Riyadh,