The San Rafael Pacifics are an American professional baseball team based in San Rafael, California, United States. They compete in the Pacific Division of the Pecos League, an independent baseball league which is not affiliated with Major or Minor League Baseball. They were previous members of the North American League and charter members of the Pacific Association. The Pacifics have played their homes games at Albert Park since 2012. The Pacifics were the winningest franchise of the Pacific Association, capturing four championships in seven seasons.

The Vallejo Admirals were an independent professional baseball team based in Vallejo, California. They were members of the Pacific Association of Professional Baseball Clubs, which was not associated with Major League Baseball. In 2017, the Admirals won the Pacific Association championship.