Everyone keeps wanting to adjust rosters, that takes FOREVER.
Start a Quick/Exhibition Game with 2 controllers on Pro. Pick any 2 teams you would like. Have controller 2 kickoff, then start hitting B and X rapidly, making the opposing team dive onto the ground. Let your kick returner catch the ball and the computer will automatically start returning the ball. With everyone on the ground, the computer shouldn't have any trouble getting the TD.
Note: If you don't score, kick a field goal and miss, turning the ball over. Then have Controller 2 throw a Hail Mary while Controller 1 chooses FG Block. Then rinse and repeat.
Thanks for the positive feedback. If you need any more help just hit me up on XBL.