Krejcikova, Gauff make last four at WTA Finals with Swiatek eliminated

Barbora Krejcikova saved a remarkable 11 out of 12 break points to defeat Coco Gauff 7-5 6-4 to advance to the semi-finals at the WTA Finals in Riyadh as the winner of the Orange Group and dump defending champion Iga Swiatek out.