Steelers running back Karlos Williams has been suspended for 10 games due a violation of the NFL's substance abuse policy.
It is the third drug suspension this year for the Steelers. Receiver Martavis Bryant was suspended for the season for his third violation of the league's drug policy and running back Le'Veon Bell was suspended for four games before having it reduced to three for his second violation.
Williams was added to the practice squad last month after he served a four-game drug suspension. He was Buffalo's fifth-round draft choice last year and rushed for 11 touchdowns as a rookie. The Bills cut him this summer because he showed up for training camp out of shape.
The Steelers never activated Williams to the 53-man roster during his short stint on the practice squad. When they needed a running back last week they signed Daryl Richardson from the practice squad to the 53-man roster.
