So the moral of the story is that QBs having a significantly longer career than other positions is a myth. For every Brett Favre or Vinny Testaverde that lasts forever there's a Ryan Leaf or Rick Mirer or Bucky Richardson or David Klingler who flames out almost immediately. Hence I don't believe they should age any differently. But I will do more research into it and see if there wouldn't be a sufficient compromise (if one is merited).Yes, but this is attributable to players like Rick Mirer and Ryan Leaf SUCKING. Not due to declining skills or ability. Just the opposite is true actually, while RBs careers are largely due to injury and declining skills. If a QB sucks he doesnt stick on the roster very long, but if a RB sucks he sticks around and plays Special teams and is useful in practice + he will still likely get in a game BECAUSE of injury way more often than a qB will. Two different reasons. I think it is common sense. How many RBs to you know that play past 31 years old and are still at the top of thier game? Barely any- and they aren't at the TOP of thier game at that age anyways, though they may still be productive. QBs are just reaching thier PRIME at this point and it is not uncommon for late 30s QBs to have career years. This is unheard of from a RB... and WR diminish in thier mid 30s as well but at a slower rate than RBs and certainly they don't sustain the same amount of injuries. This is also true of Offensive Lineman compared to say... a defensive back. Look at the average age of Starters at these positions. You will find them to be different I'm sure. i tried to google a something that shows average nfl careers by position, but was unsuccessful....can anyone find something like this?