Siniakova/Townsend finish WTA Finals group stage undefeated
Reigning Wimbledon champions Katerina Siniakova and Taylor Townsend ended round-robin play with a 3-0 record after squeaking past reigning Australian Open champion Hsieh Su-wei and Elise Mertens 3-6, 6-3, [10-8] on Wednesday.
