I watched it in slow motion several times after the game. His knee never seemed to bend or turn in a weird way. One of the Seattle lineman stepped on his foot while he was engaged in a block with a WR with his leg planted.. He immediately grabbed both sides of his knee and limped off. I wasn't optimistic after seeing this and was surprised that they said it wasn't serious. Now, I'm not surprised that he is questionable, as the injury looked pretty bad.