"The worst 1. Trent Richardson, RB, Cleveland: There are plenty of reasons to like Richardson, including his college production, intangibles and overall toughness. What's hard to ignore is the recent history of highly drafted running backs in the NFL. Only two runners taken in the first round since 2007 have turned into stars -- Minnesota's Adrian Peterson and Tennessee's Chris Johnson -- and Richardson doesn't possess the explosiveness or speed of those two." Source: ESPN.