What an insane quarterfinal match tonight between Juan Martin Del Potro and Roger Federer!! Del Po is on a roll! He pulled off an INCREDIBLE win against Dominic Thiem on Monday, and again an unbelievable feat over the un-touchable Roger Federer!!! The 3rd set tie break was a serious nail biter! Del Po overcame 4 set points to then go ahead and win the tie break! Del Po then took the match in the 4th. There were moments where it looked like perhaps a 5th set was on its way, but Del Po's brute power shut Roger down. Even with a clearly weakened backhand due to several injuries/surgeries on the left wrist, he still came out victorious over the domination sensation know as Roger Federer. Wow wow wow!!! What a match!!! Catch some great footage here, and of course, the winning point and end of this amazing match.