Serena Williams vs Agnieszka Radwanska
Live Commentary of the WTA Championships 2012 semifinal match between Serena Williams and Agnieszka Radwanska will commence here as soon as the players start warming up.
Williams leads the head to head against Radwanska with 3-0, having beaten her in the Wimbledon Championships final this year.
Serena has won all of her group matches on the way to the semis, defeating Kerber, Li Na and Azarenka on the way. Radwanska prevailed in two of her three matches, overcoming Kvitova and Errani, but losing to Sharapova.