This is an interesting study on the relationship of carries to longevity, and their relationship to yards at certain points in their carreers by age.. Not sure the final conclusion, but what I see is that a great back is a great back no matter the age.
You check it out and give your thoughts..
http://footballguys.com/06drinen-agework.php
You check it out and give your thoughts..
http://footballguys.com/06drinen-agework.php