Tatsuki used his Emboar in a battle against Iris and her Emolga. Emboar used Flamethrower, which Emolga barely dodged both attacks. Then, Emolga shocked Emboar with Volt Switch which caused the latter to use Flamethrower once more, which made Emolga flee the battle. Iris' Excadrill popped out from his Poké Ball and Iris was disqualified, due to Emolga's Volt Switch, making Tatsuki and his Emboar the winner and eliminating Iris from the tournament.
Later, Tatsuki and his Emboar faced Ash Ketchum and his Oshawott in a battle. Tatsuki ordered Emboar to use Flare Blitz and Ash ordered his Oshawott to use Aqua Jet. Both attacks clashed each other and Emboar was eventually knocked out by the clash, eliminating Tatsuki from the tournament.