Infinite ball glitch

The Colosseum Master Ball Glitch is a glitch in Pokémon Colosseum that enables the player to re-use the Master Ball as many times as he wants. This glitch will also work for any other type of Poké Ball, so that the player only has to buy one copy of each type of Poké Ball during the whole game.

The glitch is performed by selecting a Poké Ball with your first Pokémon's turn and, with your second Pokémon's turn, switching the type of Poké Ball you chose with another Poké Ball (Using the Y button). After you throw the Poké Ball, your Poké Ball pocket in your bag would still have the same amount of Poké Balls, as if you didn't use any.

This glitch does not work on Pokémon XD: Gale of Darkness.