Steelers' T.J. Watt injures knee against Ravens, ruled out

(Photo credit: Tommy Gilligan-USA TODAY Sports)
Pittsburgh Steelers star edge rusher T.J. Watt suffered a knee injury late in the third quarter against the host Baltimore Ravens on Saturday.

Watt was attended to by trainers and left the game for the locker room under his own power. The Steelers soon ruled him out for the rest of the night.

Watt and a teammate inadvertently collided during a play, and Watt went to the gr