The Wimbledon champion defeated Coco Gauff to top the group, knocking out the defending champion Swiatek, and will play Zheng Qinwen on Friday.

Barbora Krejcikova grabbed the last semifinal spot at the WTA Finals with a 7-5, 6-4 win over Coco Gauff, a result that eliminated second-ranked Iga Swiatek from the season-ending tournament.

Gauff was already guaranteed to make the semis, but Swiatek needed the American to beat the eighth-seeded Czech Krejcikova who required a victory herself to progress