"Strong safety Troy Polamalu made one of the plays of the game Sunday for the Steelers, then left for good because of concussion-like symptoms.

Polamalu injured himself while taking out the legs of Jacksonville running back Maurice Jones-Drew on third-and-1 with 9 minutes, 36 seconds left in the game.

The injury is not believed to be serious, and coach Mike Tomlin said after the 17-13 win that the Steelers held out Polamalu because they "wanted to err on the side of caution."

Polamalu, who stopped Jones-Drew short of a first down, did not address the media after the game.

In other injury news, starting left guard Doug Legursky left at the beginning of the second quarter with a dislocated toe on his left foot. He did not return. Nose tackle Chris Hoke left later in the quarter after sustaining a stinger and also did not return."