Minnesota Vikings right tackle Brian O'Neill suffered a sprained MCL in his team's loss to the Pittsburgh Steelers on Sunday in Dublin, sources told ESPN's Jeremy Fowler.
O'Neill, a two-time Pro Bowl selection, could miss time, putting the team's patchwork offensive line in a more precarious position.
Starting center Ryan Kelly also departed Sunday's game with a concussion, his second this season and at least the fifth of his NFL career.
The Vikings were already playing without left guard Donovan Jackson , who had surgery last week on his left wrist. In the process, the Steelers sacked Vikings quarterback Carson Wentz six times, hit him a total of 14 times and pressured him at a 32% rate. Two of his passes were batted at the line of scrimmage and intercepted, and he also comm