The Pit.

The Pit is a location in Hoenn, built for holding different fights, from friendly bouts to fights to the death. It was conceived by Michael, wanting to create an arena for a tournament that everyone could enter and just for fights in general. Now, almost all of the main characters have had fights in the pit and currently, Charlie holds the title of Champion of The Pit. However, Daniel was the previous Champion of The Pit before being beaten by Charlie.