Juan Martin Del Potro suffered a shock second round exit at the 2013 Sony Open in Miami, losing in straight sets to Tobias Kamke.
Kamke recorded a shock 7-6 6-1 win in Miami, and Del Potro only has himself to blame for the defeat as he led 5-2 in the first set and wasted two set points.
Kamke grew in confidence as he battled back and came from a mini-break down in the tiebreak to win it 7-5. The players were then forced off by a lengthy rain delay but on the resumption, instead of stamping his authority on the match, Del Potro looked jaded and sluggish and Kamke ran away with the second set.
"I saved two set points [at] 5 2 and somehow I came back in that set and had the chance to win it," the German said after his shock win.
"The second set after the break, I felt even better. Then in the beginning, he missed some easy forehands and he was a little bit frustrated, I think. He didn't play obviously his best tennis, but still I think I did a good job and pretty satisfied with that."
Del Potro's post match press conference was short and sweet but he was quick to hand credit to his opponent.
"I never played against him until today but he's a good player of course," he told reporters.
"I think I come to the court again (in the second set) try to be aggressive but I made a lot of mistakes, too many errors with my forehand."