Del Potro sets up a mouth-watering match against Federer

Del Potro defeated Kohlschreiber 6-4, 6-1, 6-1. Juan Martin decimated his opponent in his fourth round match to book himself a showdown with none other than Roger Federer. Del Potro has always remained a huge threat to upset the Big Four's monopoly on tennis and appeared to do so in 2009, after he beat both Nadal and Roger Federer in a slam at the same time. However he was riddled with injuries in 2010 and barely played any tennis. But luckily for him, he recovered decently in 2011 and managed to claw his way back up to 11th. Not dropping a set, Del Potro goes into the match against Roger Federer as an underdog on paper but an equal in reality. He looks to be in the form that helped win him the US Open in 2009 and could stage a major upset against Roger Federer and ruin Federer's quarterfinal streak at Grand Slams. Expect a very very tight match between these two, despite the fact that in their last meeting, Federer won in straight sets.