There will be 18 gyms in Pokémon Sword and Shield - Dot Esports

Split between a minor and major league.

Pokémon Trading Card Game - Wikipedia

People focused way too much on the tree screenshot. This games art-style really carries this game visually imo. : r/PokemonSwordAndShield

Pokémon Scarlet, Violet review: A vast open world with big tech problems - The Washington Post

Galar 18 Gym Leaders by Trainerlouie on DeviantArt

We've Re-Translated That Pokémon Sword and Shield Interview Quote

Pokemon Sword and Shield: Full Review

Pokémon Sword and Shield - Bulbapedia, the community-driven Pokémon encyclopedia

How Will the 18 Gyms in Pokémon Sword and Shield Work?

How many gyms will there be in Pokémon Sword and Shield?

The best moveset for Obstagoon in Pokemon Sword and Shield

Pokémon Sword & Shield Review – Al's Manga Blog

Pokemon Scarlet and Violet