Veteran center Maurkice Pouncey was placed on the reserve/COVID-19 list just hours before the game, the team announced.
Without Pouncey, the team will turn to center JC Hassenauer to start in his place. The Alabama product has played center primarily in cleanup minutes this season, and he's taken special-teams reps in every game.
Though the Steelers lost Pouncey, they did get back special-teams coordinator Danny Smith, who was out with an illness designation on Saturday. He was cleared to return to coach against the Ravens. Quarterbacks coach Matt Canada, who was out with the same designation, has also been cleared to return.