Liam took the position in the challenger's box. The official stated that each trainer was permitted two Pokémon, and only the challenger could make a substitution.
 "Geodude, go!" Roxanne called.
 "Mudkip!" Liam called.
 "Geodude, Tackle!"
 "Water Gun!" Liam called. the jet of water gushed toward the rock type, and it took signifiant damage. 
"Rock Blast!" Roxanne called. Three rocks rushed forward and hit Mudkip.
 "Water Gun again!" Liam called. This Water Gun was a critical hit and KO'd Geodude. Roxanne sent out Nosepass to replace it. Liam recalled Mudkip for Treecko.
 "Absorb!" Liam called. Treecko zapped some health from the Compass Pokémon.
 "Nosepass, Discharge!" 
 "Slam the ground!" Liam called. Treecko went flying and the ball of electricity soared below him.
 "Bullet Seed!" Liam called. A shower of seeds rained down on Nosepass, KO'ing it. Liam caught Treecko in his arms as he fell to the ground.  Roxanne presented Liam with the Stone Badge. Liam placed it in his badge case, beginning the row beneath Kalos' badges. Roxanne had her Pokémon healed and was ready for the next challenger.