Trainers competed in the Players Cup IV Video Game Region Finals using the Ranked Battle Series 9 Double Battle Rules in a double-elimination bracket. Battles took place in Pokémon Sword and Pokémon Shield. Players were permitted to use any Pokémon in the Galar Pokédex, the Isle of Armor Pokédex, and the Crown Tundra Pokédex, except for the strongest Legendary Pokémon.