The Southwest Region is one of ten United States regions that currently send teams to the Little League World Series, the largest youth baseball competition in the world. The region's participation in the LLWS dates back to 1957, when it was known as the South Region. However, when the LLWS was expanded in 2001 from eight teams (four U.S. teams and four "International" teams from the rest of the world) to 16 teams (eight U.S. and eight International), the Southern Region was split into the Southeast and Southwest Regions. Regional headquarters are located in Waco, Texas.