From Bulbapedia, the community-driven Pokémon encyclopedia.
The 2010-11 Modified format of the Pokémon Trading Card Game (informally called MD-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 2010 to July 2011.
The 2010-11 Modified format was announced on June 4, 2010, rotating out of the earliest sets of the Diamond & Pearl Series (Diamond & Pearl, Mysterious Treasures, Secret Wonders, Great Encounters).
- North America and Europe: September 1, 2010 to July 1, 2011
- 2010 Battle Roads Autumn
- 2010-2011 City Championships
- 2010-2011 State/Province/Territory Championships
- 2010-2011 Regional Championships (U.S. & Canada)
- 2011 Battle Roads Spring
- 2011 National Championships
- 2011 World Championships