The Pittsburgh Steelers will be without tight end Pat Freiermuth for the remainder of Sunday's game against the Buffalo Bills.
Freiermuth was ruled out with a concussion.
The tight end had two catches for 12 yards before suffering the injury as Pittsburgh's offense struggled to generate much momentum against Buffalo.
Freiermuth impressed during his rookie campaign in 2021 with 60 catches for 497 yards and seven touchdowns after the Steelers selected him out of Penn State with a second-round pick in the 2021 NFL draft.
He was off to another solid start through four games this year with 18 catches for 223 yards and one touchdown.
Pittsburgh will likely turn to Zach Gentry at tight end if Freiermuth is sidelined beyond Sunday's game. Gentry has been with Pittsburgh his entire career since 2019 but has always been a secondary contributor.
He posted 19 catches for 167 yards and zero touchdowns last season, which was the best of his career.
Freiermuth's concussion comes at a time when head injuries are in the headlines.
The NFL and NFL Players Association released a joint statement following an investigation into how Miami Dolphins quarterback Tua Tagovailoa's injuries that he suffered in Week 3 against the Bills were handled.
The league's concussion protocol was changed as a result because while "the step-by-step process outlined in the concussion protocol was followed, the outcome in this case was not what was intended."
Next up for the Steelers is a Week 6 game at home against the Tampa Bay Buccaneers.