The league hosted franchises based in Mexico, Arizona, California, Nevada and Texas.

In 1952, the league fielded an all-black team, which was originally supposed to play half of its games in the US and half in Mexico, but eventually settled in Porterville, California as the Porterville Comets.

[citation needed][1][2] 1951 Southwest International Leagueschedule President: Les Powers Playoff: Mexicali 4 games, Phoenix 1.

1952 Southwest International League President: Harry Ledell Porterville Franchise started the season as Riverside–Ensenda, became Riverside–Porterville, moved to Porterville April 25, then disbanded August 1.; El Centro disbanded July 13.

This article related to a baseball league, competition or tournament is a stub.