Nadal and Djokovic book semi-final clash

Novak Djokovic set up a mouthwatering Indian Wells semi-final showdown with nine-time French Open champion Rafael Nadal, who the world number one Serb considers his biggest rival on the ATP Tour. Both Nadal and Djokovic eased through their Indian Wells quarter-final contests in straight sets Friday and will now square off in a match worthy of a title clash. "It is going to be a game of cat and mouse," Djokovic said.