A sprained ankle doesn't worry me injury-wise. Recurring knee problems, muscle/tendon problems (see Joppru), shoulder problems for QBs (see Pennington) and those types of injuries worry me, but an occasional sprained ankle isn't really a problem with the player, just a fluke incident. I agree though that his running style does expose him to more big hits that can possibly lead to injuries, but I do like his powerful running style and he already has a man's body but could easily add some weight, and he has pretty good speed to go with it. I prefer his style of runner to that of Reggie Bush, but that's an entirely different argument. Maybe the Falcons will trade up for the #1 pick and grab Reggie this year, then find a way to trade up and get Peterson next year so they can trade in Dunn's aging body and Duckett's recent ineffectiveness and have a true thunder and lightning duo with young studly RBs. Purely a hypothetical that will never come to fruition, but an interesting thought nonetheless for a team that runs the ball a ton and is relatively less secure at RB than a team like Denver or Kansas City.