Pokemon Season 12 - Episode 603 – Challenging a Towering Figure

Ash, Barry and Brock enters the Twinleaf Festival's main event, a battle tournament. The winner is offered a chance to battle Palmer of the Sinnoh Battle Frontier. Ash wins the tournament and battles Palmer. Palmer choses his Rhyperior and Ash choses Grotle. Palmer comes up with his strategies and almost defeats Grotle. Even after Grotle boosts up by swallowing its own Energy Ball, Rhyperior defeats it. Ash is awarded the trophy for winning the Twinleaf Town Battle Tournament. Ash and friends say bye to Palmer and Barry and leave Twinleaf Town to go to Lilypad Town for Dawn's next Pokémon Contest and after to Ash's final Gym Challenge in Sunyshore City.