The Steelers will be without running back James Conner when they take on the Raiders in Week 14, coach Mike Tomlin announced Tuesday.
Conner left Sunday's 33-30 loss to the Chargers toward the end of Pittsburgh's final drive of the game. Tomlin said Conner suffered an ankle sprain on the play where Los Angeles's Adrian Phillips tackled him and caused him to come off the field.
The team initially thought the injury was just an ankle contusion.
The Steelers have relied heavily on the second-year back from Pitt wit All-Pro Le'Veon Bell deciding not to report to the team this season.