From Bulbapedia, the community-driven Pokémon encyclopedia.
The 2004-05 Modified format of the Pokémon Trading Card Game (informally called RS-on and now referred to as Standard format) was a former Standard format used for Play! Pokémon organized play and in most sanctioned tournaments worldwide from September 2004 to August 2005.
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Reason: needs dates.
The 2004-05 Modified format was announced on ..., rotating out Expedition Base Set, Aquapolis and Skyridge. Sanctioned play periods varied slightly due to different release schedules in various regions.
- North America:
- 2004 Battle Roads Autumn
- 2004-2005 City Championships
- 2004-2005 State/Province/Territory Championships
- 2004-2005 Regional Championships (U.S. & Canada) only
- 2005 Battle Roads Spring
- 2005 National Championships
- 2005 World Championships