The 10th seed American John Isner came back from a set down to beat the Russian Nikolay Davydenko 2-6 6-3 6-4 in the second round of the Miami Tennis Masters.
Isner, who reached the Indian Wells Final last week, where he lost to Federer, will play Florian Mayer of Germany in the next round. Mayer defeated Ivan Dodig of Croatia 6-4 7-5.
Milos Raonic set up a third round encounter against the 2009 winner Murray. The Canadian dismissed the French qualifier Arnaud Clement 7-6 (7) 6-2.
Raonic is on top form this year, he has already won two titles (Chennai and San Jose).