Novak Djokovic will play Andy Murray in the final of the Miami Open after beating John Isner in straight sets.

Isner came into the last-four clash having not lost his serve in 71 games in singles and doubles during the tournament, and the American was able to keep his impressive run going at the start of the match, despite an early examination from the world number one.

Djokovic managed to limit the number of unforced errors as he tried to apply pressure on the big-serving American right-hander.

The Serbian's persistence almost yielded a break in the 12th game of the first set, but Isner was able to fight back and force a tie-break.

However, the Australian Open champion took control of that tie-break, winning it 7-3 to put himself a set to the good.

Isner received a further blow early in the second set when Djokovic managed to break twice to open up a 4-1 lead.

Djokovic ruthlessly wrapped up the set 6-2 to seal his place in Sunday's final against Murray.