The Pittsburgh Steelers may be without one of their best offensive players in Week 15.

Jaylen Warren, the Pittsburgh Steelers' No. 1 RB and a reliable fantasy running back, has been added to the injury report. He's questionable for Monday Night Football against the Miami Dolphins. Fantasy lineups are mostly set in stone at this point. Everyone but the Steelers and Dolphins has played already.

Steelers running back Jaylen Warren is active for Monday Night Football.

PITTSBURGH — The Steelers will be without some key players against the Dolphins. According to the team’s inactives list, defensive tackle Derrick Harmon won’t play. This is his third week sidelined with a knee injury, despite head coach Mike Tomlin saying he was “optimistic” Harmon could return.

An integral Pittsburgh Steelers starter could miss MNF vs. the Miami Dolphins after unexpected news lands him on the injury report.

“Steelers star T.J. Watt is expected to play again this season following surgery on his partially collapsed lung after a dry needling treatment, sources say,” wrote Ian Rapoport of NFL Network via Instagram on Friday. “Sometimes this heals on its own. This didn’t, so surgery was necessary. A scary 24 hours. But full recovery is expected.”

Sermon was a former star running back at Oklahoma and Ohio State. When he came out during the 2021 NFL Draft, Sermon thought the Steelers would draft him, but that was before they landed Najee Harris in the first round.

Steelers running back Jaylen Warren was also added to the injury report Monday due to an illness, but he is set to play against the Dolphins. This article originally appeared on Dolphins Wire: Dolphins vs.