Ben Roethlisberger returned to practice Monday and said the concussion that knocked him out of the Steelers' regular-season finale won't be an issue against the Chargers on Sunday. "The next test I'm going to face is Sunday against the Chargers," Roethlisberger said. "I plan on being out there and being 100 percent and ready to go." Roethlisberger passed an ImPACT test, which the Steelers and other NFL teams use to gauge where a player is physically and mentally after sustaining a concussion.