6 unlikely players who defeated Rafael Nadal at a Grand Slam

1. Juan Martín Del Potro

Del Potro gave Nadal a taste of his own medicine

US Open 2009 Semifinal - Del Potro def. Nadal 6-2, 6-2, 6-2

This is arguably Nadal’s most embarrassing defeat in terms of the number of games he won.

Del Potro was in top form in 2009. He reached the French Open semifinal, only to be stopped by Roger Federer. But in New York, he would not be denied.

In the semifinal, Del Potro absolutely manhandled Nadal. He broke Nadal twice in the opening set, hitting some astounding forehand and backhand winners. No matter what Nadal threw at him, Del Potro came back with more vengeance to put the Spaniard in an untenable position.

The second and third sets were a carbon copy of the first set, all of which Nadal lost 6-2. No other player has ever annihilated Nadal the way the Argentine did in this match.

Del Potro carried his red-hot form into the US Open final where he beat Federer in five sets to win his maiden Grand Slam.