Juan Martin Del Potro has secured his passage into the next round of the Miami Masters with victory over Marin Cilic.
The big-hitting Argentine took just over an hour and 48 minutes to dispose of the Croat in straight sets 6-3 7-6[3].
Victory for the 2009 US champion sets up a clash with David Ferrer, who beat Julien Benneteau.
Del Potro has climbed back up to 11th in the world rankings since returning from a wrist injury which kept him out all of last season.
