Individual Statistics-Running Backs

This season I hope to start posting individual players statistics. I've started working with running backs. I've defined running backs as players that carry the ball an average of 4 times per regular season game (48) and throw less than 2 passes per game. To be included in the leaderboard above, a player must have carried the ball 8 times per game (96). In addition to carries and rushing average, I've added a few interesting, statistically derived numbers. First, FD is the probability that, if given the ball threes times, the player would gain 10 yards (roughly the requirements for gaining a first down). The next two numbers are the probability that the player would lose one yard and gain 10 in one carry.

Enjoy