Steelers quarterback Ben Roethlisberger is in serious but stable condition and in surgery this afternoon following a serious head injury this morning after his motorcycle collided with a car on Second Avenue near the 10th Street Bridge, police said. Roethlisberger lost most of his teeth, fractured his left sinus cavity bone, suffered a nine-inch laceration to the back of his head and a broken jaw, and severely injured both of his knees when he hit the ground, police said. 3:09 pm