Loyola Marymount has played in the West Coast Conference since 1955, when the Lions and Pepperdine Waves joined the hitherto Northern Californian league that included Santa Clara University, the University of San Francisco, Saint Mary’s College, and the University of Pacific. LMU has played in the WCC ever since, fostering heated rivalries with all WCC members, especially Pepperdine University and the University of San Diego, a WCC member since 1979.