ESPN's Adam Schefter reports that the Steelers believe Edge T.J. Watt suffered a Grade 3 sprain to his left MCL in Saturday's win over the Ravens. Watt reportedly wanted to re-enter the game after sustaining the injury, but the team would not let him. He'll have further testing to confirm what is typically a multi-week injury. If the Steelers make the playoffs -- they need some help Sunday -- we'll see whether Watt can return for the opener.
Update: NFL Network's Ian Rapoport reports that it's believed to be an MCL tear. That would seem to make Watt unlikely to play in the playoffs, if Pittsburgh qualifies.
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