Reigning champ Novak Djokovic beat a stubborn 21st-seeded Juan Monaco 6-0, 7-6 (7/5) to book a re-match of the 2009 Miami Masters final with Scotland's Andy Murray.

Murray, who got the better of Djokovic in the 2009 title match, reached the final on a walkover when world No. 2 Rafael Nadal pulled out of their semi-final with a sore left knee.

World No. 1 Djokovic on Friday breezed through his first set in just 27 minutes and appeared to be cruising to a victory when Monaco got hot in a marathon second set which lasted one hour, 36 minutes.