Roger Federer sets up Del Potro final, Williams and Maria Sharapova set for WTA final

World number one Roger Federer beat Paul-Henri Mathieu 7-5 6-4 to reach the final of the Swiss Indoors in Basel.
Federer, a five-time winner of the event, will play Juan Martin del Potro in Sunday's final after the second seed beat Richard Gasquet 6-2 6-2.
Del Potro won in Vienna last week and his only loss on indoor hard courts this season came against Federer in the Rotterdam final in February.
Federer is chasing his sixth title in seven years in his hometown event.
Sunday's final is a rematch of the epic Olympic semi-final at Wimbledon in August, when Federer won the decisive third set 19-17.
Federer has a 13-2 career record against Del Potro, though one of the Argentine's victories came in the 2009 US Open final.

Serena Williams and Maria Sharapova will face each other in the final of the WTA Championships in Istanbul.
Williams, the American world number three, booked her place in Sunday's final with an emphatic 6-2 6-1 win over Agnieszka Radwanska in 61 minutes.
Sharapova, the world number two from Russia, had to work much harder before overpowering world number one Victoria Azarenka 6-4 6-2 in her semi-final.
The match featured a sixth game in the second set that lasted 15 minutes.