Delphox was used by Wylie in a battle against Carrie, who was using Clemont's Chespin. Delphox quickly gained the advantage in the battle, since Chespin struggled to dodge its attacks due to the Grass-type's weight gain. As Delphox was about to finish Chespin off with a Flamethrower, Clemont stepped in to protect Chespin.
The battle then continued, with Delphox's Will-O-Wisp attacks being constantly dodged by Chespin. Delphox eventually managed to hit Chespin with a powerful Flamethrower, causing Chespin to activate Overgrow and deal a lot of damage to Delphox with a Vine Whip. Wylie then decided to use his "best move", though his attempt to command it resulted in him injuring his back, ending the battle in a draw.