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.

Defending champion Iga Swiatek has been knocked out of the WTA Finals in Saudi Arabia after group rival Barbora Krejcikova beat Coco Gauff to secure her place in the semi-finals .

Defending WTA Finals champion Iga Swiatek was eliminated from the season-ending championship on Thursday after Barbora Krejcikova's 7-5 6-4 win over Coco Gauff meant the Polish world number two failed to advance to the last four.