"Q: I know Willis McGahee? has been around awhile in the NFL. Did they want him to carry the ball as much as he has so far this season when they signed him, or are they worried he'll wear down?

A: James, McGahee turned 30 in October, and that birthday is usually a benchmark for running backs throughout the league.

There are countless examples of players' production at the position taking a drastic drop shortly after their 30th birthdays. Such is the nature of the job.

McGahee has already carried the ball 182 times this season, which with four games remaining in the regular season is his highest total since 2007, his first season in Baltimore. At his current pace — 16.5 carries per game — McGahee would finish the regular season with about 248 carries.

That would be his highest output since he carried the ball 294 times with the Ravens in 2007."