Nosková wins WTA Finals opener, Siniaková and Townsend lose first match

Wimbledon champion Linda Nosková made a winning start to the WTA Finals in Indian Wells, beating Ukraine’s Marta Kostyuk 6-2, 6-4. Kostyuk entered the tournament as a substitute for world number one Elena Rybakina.

Nosková will next face Americans Coco Gauff and Jessica Pegula in Group 1. Another Czech player, Karolína Muchová, begins her singles campaign against Belarusian Aryna Sabalenka today.

Meanwhile, Kateřina Siniaková and her American doubles partner Taylor Townsend lost their opening match to Italian Olympic champions Sara Errani and Jasmine Paolini, 4-6, 6-1, 8-10. They have two more group matches to play.