Plus you've got successes like Devvarman, Kevin Anderson, Isner. All saying that you can't physically compete at 19 with these 25 year olds out there on tour.
[College] was the best preparation in could have ever asked for, Isner said. In those four years [at Georgia], I had unbelievable coaching with Coach Diaz. I learned so much mentally, and I got so much stronger physically. Coming out of high school I was tall, skinny, and gangly, not strong and not mature. I was none of that. I had to go to college and get stronger. I had to start growing out instead of up.