John Elway's Quarterback Cheats

If you are just unhappy with a play, before the play is over press Start and call a timeout. This will trick the AI, and you will be able to redo the whole down with no lost yards!

To have your receiver run extremely fast, on the Play Select screen, put the selector on the Normal/Reverse option and leave it there until time expires.
Once you can move, toss the ball to a receiver, and he will be running much faster than anyone else on the field.