In the interests of maintaining a healthy tournament environment, Pokémon Organized Play begins each new tournament season by removing older expansions from Modified format competition. Each annual rotation challenges existing players to create new strategies while enabling new players to get into Organized Play with minimal investment.

The 2014 season started on July 9th, 2013, so players could get an early start on working towards the 2014 Pokémon World Championships. However, we will rotate expansions on August 28th, 2013.

The 2013 Pokémon World Championships being held on August 9th–11th in Vancouver, BC, Canada, will use the 2013 format and rules as are currently listed.

The Modified format for the 2014 season will consist of the following expansions: