Hammerlocke Stadium is the largest building in the city and is the site at which the eighth installment in the Galarregion's Gym Challenge takes place. It is located in the central part of the city, past the center Pokémon Center.
While pursuing Sordward and Shielbert, the brothers will use their stock of Wishing Stars to force multiple Pokémon from the Stadium to Dynamax against their will, causing them to rampage in the Stadium. The player will face a Haxorus with their party while Hop, Piers, and Raihan handle the rest.
Hammerlocke Stadium was first mentioned, although not by name, in Flash of the Titans!, where Lance revealed he had once trained there. He had also been impressed by the Gym's uniform and its rich history, and had thus decided to use it as the basis of his own current outfit.
The stadium made its first appearance in Sword and Shield: The Darkest Day!, where Leon stood in front of it while intending to investigate Chairman Rose's actions at the Energy Plant. In the next episode, Eternatus emerged from the Energy Plant core and into the Hammerlocke Stadium battlefield, where the audience safety barrier hindered its escape attempt. Ash and Leon met each other at the battlefield, where Rose appeared before them and urged Leon to catch Eternatus as it broke through the barrier and escaped to the top of the stadium to absorb Galar particles, while engaging Ash in a Double Battle himself to keep him from interfering. Meanwhile, at the stadium entrance, Goh rushed in to help, only to be confronted and challenged by Oleana.
The stadium reappeared in Catching the Aura of Fate!, where Raihan greeted some of his fans in front of it, following the announcement of the World Coronation Series battle between him and Ash. Once he had gone back inside, he started training, knowing that losing the battle would mean losing his chance to get to battle Leon in the current season of the competition. The battle took place in the next episode, with Ash ultimately winning and gaining himself a spot in the Master Class.
Goodra is Raihan's third known Pokémon. It was the second Pokémon that Raihan used in his World Coronation Series match against Ash, where it went up against his GigantamaxGengar. The confrontation between the two Pokémon eventually led to a double knockout.
In Rising!! Opal of Ballonlea, Bede visited the stadium's lobby to receive a letter sent to him by Opal. Immediately afterwards, the whole city was shaken by a powerful quake originating from the Energy Plant. In PASS17, Raihan sneaked into the Energy Plant to investigate, being quickly found out by Chairman Rose and Oleana. They explained the quake away as a failed experiment, although Raihan didn't buy the explanation.
Hammerlocke Stadium Cards listed with a blue background are only legal to use in the current Expanded format. Cards listed with a silver background are legal to use in both the current Standard and Expanded formats.