PITTSBURGH -- The Steelers' backup running back has 15 touchdowns since 2015. That backup plays behind arguably the game's best at the position.
And that Le'Veon Bell-DeAngelo Williams still wasn't enough to dissuade the Steelers from combing the market for future tailback talent.
The signing of Karlos Williams to the practice squad is a low-risk, potentially high-reward move that might alleviate the need to draft a running back high in the 2017 draft.