The Pittsburgh Steelers have a critical matchup with the Baltimore Ravens in Week 13, but they may be without one of their key offensive weapons for the rivalry clash.

According to ProFootballTalk, Steelers head coach Mike Tomlin revealed that rookie tight Pat Freiermuth was in concussion protocol following Sunday's loss to the Bengals.

His status for Sunday's game is up in the air after being placed in concussion protocol. Freiermuth was on the field for 47 of the Steelers' 62 offensive snaps in Week 12, recording four receptions for 40 yards and a touchdown. He left the game late in the fourth quarter after sustaining a knock to his head.

The loss of the budding star rookie would be a big blow for Pittsburgh, who just recently placed veteran tight end Eric Ebron on Injured Reserve after he hurt his knee. If Freiermuth is unable to suit up on Sunday against Baltimore, the Steelers would be down their two top tight ends in what could be a pivotal game.

With Ebron and potentially Freiermuth out for the Week 13 matchup, fellow tight ends Zach Gentry and Kevin Rader may be in line for a significant increase in snap count. Other Steelers appearing on the injury report included T.J. Watt, Joe Haden, Christian Kuntz and Robert Spillane.

The Penn State product has helped revamp the Steelers' offense in 2021, recording 40 receptions for 327 yards and six touchdowns on the season. He's featured on at least 55% of the Steelers' offensive snaps in each of the past six weeks, having fully established his role within the offense.