Nadal beats Federer to advance in semis
Fourth seed Rafael Nadal rallies past Roger Federer in the Western and Southern Open.
Nadal has now booked a place in the semifinals after beating his old rival, 5-7, 6-4, 6-3.
Meanwhile, the world's top one and top two -- Novak Djokovic and Andy Murray -- are knocked out of the tournament.
Djokovic came up short against John Isner, failing to become the first player to win all World Tour Master titles.
Wimbledon champ Murray also suffered an upset from Tomas Berdych in straight sets. -- ANC, World Tonight, August 17, 2013