Rory McIlroy has put on 20 pounds of muscle since he won his first PGA tournament, and he looks completely different

As he attempts to become just the sixth player to ever complete the career Grand Slam, Rory McIlroy has turned himself into one of the fittest golfers in the world. He recently graced the cover of "Men's Health" and discussed his workout routines, and did a promotional video for Nike documenting his workouts. According to Brian Wacker of PGATour.com, McIlroy has dropped his body fat percentage to 10% from 24% in 2010, when he couldn't do a plank longer than 30 seconds. Charles Siebert of the New...