Juan Martin del Potro stunned tennis fans around the world, defeating 5-time U.S. Open champion Roger Federer in an enthalling 5-set epic. The 20 year old Argentine won his first Grand Slam title 3-6, 7-6, 4-6, 7-6, 6-2 with a lot of help from his marvelous forehand. Del Po smacked 57 winners to Federer's 56. The key stat though, ws JMDP's 1st serve percentge of 65, to Federer's poor 50. Congrats del Po!