The Portland Mavericks are a baseball team located in Keizer, Oregon, who are charter members of the Mavericks Independent Baseball League, a four-team league created in 2021. The entire league, including the Mavericks, will play their games at Volcanoes Stadium in the Salem Metropolitan Statistical Area. The owners of the Salem-Keizer Volcanoes, a former San Francisco Giants' Minor League Baseball affiliate, bought the rights to the Mavericks to help create the league after the Giants ended the affiliation in 2020.

Volcanoes Stadium is a minor league baseball park in the northwest United States, located in Keizer, Oregon. It is the home field of the Salem-Keizer Volcanoes, formerly the Class A affiliate of the San Francisco Giants in the short-season Northwest League. It now plays host to the Corban University baseball team full time. The Warriors participate at the NAIA level and are members of the Cascade Collegiate Conference. It also is the home to all four teams in the Mavericks Independent Baseball League.