Some interesting Portis vs. Emmitt stats
here
Number of rushing yards gained by Washington running back Clinton Portis after his first four NFL seasons: 5,930 yards.
Number of rushing yards gained by the NFL's all-time leading rusher Emmitt Smith after his first four NFL seasons: 5,699 yards.
Number of more carries that Portis has than Smith at this point of their careers: None. Despite having 231 more career yards after four seasons, Portis has four less carries.