Former Bills running back Karlos Williams is back on a roster -- but not in Buffalo.
Williams can play the moment he is activated, having finished his four-game suspension for violating the league's policy on substances of abuse.
With LeSean McCoy nursing a possible hand injury in Buffalo, it would have made sense for the Bills to stash Williams on the back end of their roster in case of an injury. They can still pluck him off the Steelers practice squad at any time.
Pittsburgh will place Karlos on a roster that also holds his older brother, linebacker Vince. A sixth-round pick by the Steelers in 2013, Vince Williams has a pair of sacks and 21 tackles over the past two weeks.
