Green Bay Packers outside linebacker Aaron Kampman played most of Sunday's loss at Tampa Bay with a concussion before leaving the game in the fourth quarter. His availability for the Packers' upcoming game against Dallas is unclear. Kampman said Monday he took a hit to the left side of his head on the fourth play of game and still wasn't feeling quite right Monday. An eight-year veteran, Kampman says this isn't the first concussion of his career but he hasn't had one...