Nadal sets up Murray clash

Defending champion Rafael Nadal set up a blockbuster quarter-final against Andy Murray after they both overcame big-serving opponents at the Australian Open.

Fifth seed Murray began the day on Rod Laver Arena and produced a near-flawless display to blunt the booming serve of 6ft 9in American John Isner and win 7-6 (7/4) 6-3 6-2.