The team has its roots going back to 1892, when the team was originally called the El Paso Browns. The name eventually changed to the Mavericks. In 1913, the El Paso Mavericks played in the Copper League, which consisted of teams from Silver City, Hurley, and Santa Rita, New Mexico. Despite coming in third place that season, the Mavericks went on to win the post season tournament, becoming the Southwestern Champions of 1913. In 1915, the Mavericks joined the Rio Grande Association, a Class D minor league. Though the league folded after a year, the Mavericks continued to play in some form or another.