Knowshon Moreno takes to Twitter to refute retirement rumors

This is not true. I plan on being back on the field in 2016. pic.twitter.com/MvufXYQqid

The career of an NFL tailback is often, with apologies to Thomas Hobbes, nasty, brutish, and short. About 3-5 years to be exact. After that the ravages of a game which sends 270 pound human missiles aiming for your knees usually takes its toll. And that's before you consider the effects of injuries that can rob a player of speed and elusiveness, the two attributes which most readily assist with dodging human missiles.