Adrian Peterson?s season-ending knee injury was a cruel reminder for NFL running backs. They play a hazardous position with a short career span. All of this season?s top 10 rushing leaders are under the age of 30. Five of them are 25 or younger -- LeSean McCoy (23), Ryan Mathews (24) Ray Rice (24), Arian Foster (25) and Marshawn Lynch (25).
Look at this season?s top six rushers. None were drafted among the top 50 picks. McCoy (53rd), Rice (55th), and Maurice Jones-Drew (60th) were all second-round picks. Frank Gore was a third-rounder. Michael Turner was a fifth-rounder. Foster was not drafted at all.
Teams believe there is always depth in the draft at running back. So they are reluctant to sink a significant amount of their payroll into veterans at that position.
Quarterback is the most important position in football, and many of the best ones have their best seasons after age 30. Tom Brady is 34. Drew Brees is 32. Tony Romo is 31. Eli Manning is 30.
It?s a whole different scenario for running backs. By the time he turns 30, if a running back is still in the league, he is usually getting fazed out after years of taking punishment. Clinton Portis could not find work this season at age 31. Among the league?s top 20 rushers this season, only Fred Jackson and Willis McGahee have reached that dreaded age of 30 for running backs. Both are exactly 30 years old.
Thomas Jones (33) and LaDainian Tomlinson (32) are throwbacks for running backs, but both have become role players instead of lead backs. Losing even half a step can be devastating for a runner, the difference between getting through a hole before it closes or not. A running back hears the clock ticking from the time he enters the league.