What Happens When Roger Federer Gets SUPER ANGRY? (Stunning Comeback!)

9 Years ago Federer pulled off one of the greatest comebacks ever against Del Potro in a Grand Slam Quarter finals after being 2 sets down! One of the most entertaining tennis matches ever. Intro : https://www.youtube.com/watch?v=3BtEm4loQrM "Act of 4 February 1994 on Copyright and Related Rights This video is fair use under U.S. copyright law because it is noncommercial and transformative in nature, uses no more of the original than necessary, and has no negative effect on the market for the original work."