From Bulbapedia, the community-driven Pokémon encyclopedia.
The 2017-18 Standard format of the Pokémon Trading Card Game, formally called the Modified format, is one of two formats used (alongside the Expanded format) for Play! Pokémon organized play and in most sanctioned tournaments worldwide from September 2017 to September 2018. It is also used in the Pokémon Trading Card Game Online.
The 2017-18 Standard format was announced on July 12, 2017, rotating out Primal Clash, Double Crisis, Roaring Skies and Ancient Origins, the last few expansions from the XY Series.
- Worldwide: September 2, 2017 to August 28, 2018
- 2017-2018 League Cups
- 2017-2018 Regional Championships (On several locations worldwide)
- 2018 Europe International Championships
- 2018 Oceania International Championships
- 2018 Latin America International Championships
- 2018 North America International Championships
- 2018 World Championships