Getty Images

Bengals linebacker Vontaze Burfict has exited today’s game against the Ravens with a concussion.

Burfict suffered the injury when he lowered his helmet and hit Ravens quarterback Joe Flacco in the midsection. At first it looked like Flacco had taken the worse end of the collision, but it was Burfict who got up slowly and had to head to the sideline.

Under NFL rules, Burfict cannot return to this game and cannot return to practice or play until he’s been cleared through the league’s concussion protocol.

Burfict is the second key member of the Bengals to be lost in today’s game, after tight end Tyler Eifert suffered an elbow injury. Nonetheless, the Bengals lead the Ravens 15-0.