Roger Federer rocks! He seems like such a great and professional sportsman... and at least he's not like Tiger Woods
Tiger Woods is the golfer that I like most. There are some other sports person like Sachin Tendulkar, michael Shumakar etc.
John Wall is someone who I have followed when he was in High School. He is now the possible first pick in the upcoming NBA Draft and one of the best players in college basketball. I would have to go with him.