Pokémon the Series: Sun & Moon Episode 143: Fiery Surprises!
Episode 143 of 146 of Pokémon the Series: Sun & Moon, aired October 13, 2019, 25 minutes. Available with English subtitles and dub where released.
Episode summary
With three Pokémon left on each side during the Alola Pokémon League’s exhibition match, Ash’s Naganadel is up against Professor Kukui’s Lucario.