Pokémon Sapphire Cheats

Training Lv. 20 and under pokemon
Find interveiwer gabbey and tv.They are in theree places 1. below the desert above mauvill city. 2. across the sea on the right of mauvill city 3. right of fortree city.
make sure you have the pokemon you want to train in either the first or second slot and a really strong pokemon in the other (one or two). Face interveiwer gabbey and tv in a doble battle. Defeat both of their pokemon with your stronger pokemon your weaker pokemon gets the same exp. as your stronger one it just raises higer like two or three levels.