Alejandro Falla stunned Ivo Karlovic by progressing into the third round of the Miami Masters with a straight-sets victory tonight.
The 133rd seed upset the world number 22 with a 6-4 6-2 victory in just 66 minutes, sealing his place in the next stage.
The Colombian got off to a perfect start by breaking the Croat's serve in the first game in a move which proved decisive, with the duo holding serve for the remainder of the set.
Falla inflicted two more breaks in the third and fifth game of the second set to move 4-1 ahead, and the deficit proved too much for Karlovic to recover.
