Begin a new game, go to the Game Setup screen and highlight either the Home or Visiting Team options. Press [L] [R] [L] [R] A to play as the Jacksonville Jaguars, or press [L] [R] [L] [R] Y to play as the Carolina Panthers. These may only be used in an Exhibition Game.
Start a new game, choose your teams and the normal mode of play, then highlight Game Time and press [L] [R] [L] [R] X. The game will begin with 1 minute left on the timer.