There was a preliminary round. They had 35 legendary Pokémon and wanted 32 so they could have a neat tournament format, so they put the Kanto birds up against the Johto beasts before the main tournament started. Suicune, Entei and Raikou won.
I didn’t cover this because I was late to the party and didn’t know about the event until the preliminary round was over.
Pokémaniacal 