Two-time defending champion Novak Djokovic crashed out in the fourth round of the Miami Masters while last year's runner-up Andy Murray eased through to the quarter-finals in straight sets.
Novak Djokovic returns a shot to Tommy Haas at the Miami Masters on March 26, 2013. Haas upset the world number one in straight sets 6-2, 6-4 to reach the quarter-finals.
World number one Djokovic was stunned 6-2, 6-4 by German 15th seed Tommy Haas but US Open winner Murray had no such difficulties, breezing past Italy's Andreas Seppi by the same score in the $8.5 million ATP and WTA hardcourt event.
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