It's Serena vs Sharapova in Istanbul final; Federer in Swiss finale

Maria Sharapova set up a blockbuster WTA Championships final against Serena Williams on Saturday with a crushing 6-4, 6-2 win over world number one Victoria Azarenka.

Olympic, Wimbledon and US Open champion Williams had earlier eased into Sunday's title match with a 6-2, 6-1 success against an exhausted Agnieszka Radwanska in a repeat of this summer's All England Club final. "I have lost to Victoria a few times so I was happy to get the chance to play against her," said Sharapova.

Serena Williams and Maria Sharapova

"Against the World No 1, you have to run down every ball. She's number one for a reason. It will be a difficult match against Serena. She's been on fire, she's the one to beat."

Federer in Swiss finale
Meanwhile, in Basel, top seed Roger Federer beat Paul-Henri Mathieu of France 7-5, 6-4 to storm into the ATP Swiss Indoors final on Saturday. Federer will take on Juan Martin del Potro, who reached his second ATP final in succession with a 6-2, 6-2 victory over Frenchman Richard Gasquet earlier.u00a0