Williams was seen grabbing his right leg after rushing for a six-yard gain, and was able to put no weight on it as he left the field.
Before leaving, Williams had five carries for a total of eight yards, and added 13 yards receiving on two catches. He was replaced by Fitzgerald Toussaint on the following drive.
The Steelers can make the playoffs with a win over the Browns, coupled with a loss by the Jets.
- Kenny Ducey