Pokémon : S24 | E17 – Thrash of the Titans!

Ash and Goh return to Unova. When they get to Opelucid City, Goh meets Iris, and Ash finds out that she became the Unova Champion. Ash battles her for his World Coronation Series. During the battle, Ash sends out his Dragonite against Iris' Dragonite but is quickly tired. Ash sends in his Dracovish and defeats Iris's Dragonite, but Iris's Haxorus (revealed to have evolved from Axew) defeats Dracovish. Ash sends his Dragonite back out. Just as it seems like Dragonite will lose, Iris supports Ash's Dragonite. Ash's Dragonite then gains confidence and learns Draco Meteor and defeats Iris's Haxorus. Ash's win brings his rank to 99, promoting him to the Hyper Class. (Source: Wikipedia)