Williams sisters in doubles final

Venus and Serena Williams swept through to the final of the ladies doubles with an emphatic 6-1 6-2 victory over Cara Black and Liezel Huber.

The sisters, who meet in Saturday's singles final, showed no sign of fatigue en route to a 61-minute win.
Black and Huber offered late resistance defending several match points before succumbing to their opponents' power.
The defending champions will be hoping to land a fourth doubles title after victories in 2000, 2002 and 2008.
Either Samantha Stosur and Rennae Stubbs or Anabel Medina Garriques and Virginia Ruano Pascual will form the opposition in the final.