Single Battle Mode is one of four different Battle Formats found at the Trainer Tower. As the name suggests, players will challenge the trainers standing in their way to the top floor of Trainer Tower in Single Battles. Like all of the other Battle Formats at Trainer Tower, you will need to defeat one trainer on each floor in Single Battle Mode, with there being eight floors in all. Each opposing trainer will have Pokemon at the same level of the highest leveled Pokemon in your Party. Defeat all eight trainers in Single Battle Mode to receive the Up-Grade, an Evolutionary Item that can be held by Porygon in order to Evolve into Porygon2 when traded.
Single Battle Mode Pokemon Trainers
Sailer Alberto: Feraligatr, Kangaskhan
Bug Catcher Brandon: Beedrill, Yanma
Juggler Jarrett: Weezing, Exeggcute
Youngster Cole: Primeape, Slowbro
Camper Joey: Nidoking, Tauros
Swimmer Braden: Dunsparce, Politoed
Burglar Jac: Meowth, Chansey
Pokemon Breeder Lily: Togepi, Snorlax