AFL Live 2003 Cheats

Using cheat mode:)
In the bounce up during a game, press and hold  Up + Select + X then release Select, Up, X (in that order). Replace X with Triangle, Circle, or Square for different cheats.
User Cheat by Sammy
 

Getting easy wins:
By picking Brisbane in the Gabba against any other team under the easy difficulty setting and you will be unbeatable.
 

Using your reserves:
If a player has retired during the last season, there are 10 or more reserves you can put in to replace the retired players(s).