The Cincinnati Bengals head into a crucial game against the Pittsburgh Steelers in Week 11. While the stakes couldn’t be higher, the team faces devastating news that could be a major blow to its defense. Things have turned for the worse for defensive end Shemar Stewart, who sustained an ankle injury in Week 2.

Per the NFL Network‘s Tom Pelissero, Shemar will go on the injured reserve because of a knee injury. The player will likely be out for at least four games.

The first-round pick delivered a promising performance in Week 1, but the lingering ankle issue held him back afterwards. It’s a big blow for the Bengals, who are fighting to stay alive in the division race. They are at 3-6 while their opponent is ruling the AFC North.