Pokémon Sapphire Tips

Easier Catching Pokemon
Have a Pokemon that knows the move "Endeavor". Get into the Pokemon battle that you want to catch, make sure you have only 1 HP left. When you get into a battle with a Pokemon that you want to catch. Use the move "Endeavor". You will get the Pokemon down to 1 HP. Use an Ultra Ball, and you will have a lot better of a chance to catch the Pokemon.