A great runningback; sadly he end up with the lions in which he pretty much saw no playoff games (I think)
Retired at 30 if I'm not mistaken. Not because of injuries but just because he was done with football.
He retired 1457 yards away from Walter Paytons rushing record at the time. He retired because of the lack of on field success for the team and didn't like the direction of the Lions. He said something along the lines of his dream was always to play in the Superbowl but he came to the realization that all of his individual statistical achievements didn't put the team any closer to even making the playoffs. Sad if you think about it. The Lions have wasted 2 of the best positional players of all time