"He is a remarkable player. He's one of these players that is really a once-in-every-10-years kind of physical specimen that comes along. Mario Williams was that way. I think Clowney is actually a better athlete than Mario, so that kind of tells you what kind of player he can be," McNair said. "Like many of these fellows who have these great physical attributes, they didn't have to work as hard in junior high school, in high school, and in college, to be a superlative athlete, because they had this natural ability."