VS. 
Adrian Peterson, or as illiterates like his father call him, "A.D.", may have lots to worry about as he shifts from Sooner legend to NFL runningback. While the health of his ankles or shoulders, and the presence of homicidal linebackers like Ray Lewis will likely weigh heavily on his mind, one thing he can rest easily on is concern for attack from a Tyrannosaurus Rex.
"Wait," you may be saying, "why would he be worried about that in the first place? The T-Rex--which is, by the way, a more fitting nickname than "A.D." for Adrian Peterson--has been extinct for millions of years. Plus, Tom Coburn says they never existed." To be honest, I would have to concede all of those points to you since I haven't tested any dinosaur bones for the presence of papier mache. That did not stop scientists from researching whether David Beckham would have been able to outrun one. For those who are interested, he's dino-meat.