SAN MARCOS, Calif. Relays ruled the day for the Cal State San Marcos track & field team with two squads qualifying for the NAIA National Championships at the Mangrum Invite on Saturday afternoon.The Mangrum Invite served as one of the headline events for Discover CSUSM Day, which invited thousands of prospective students to visit the campus to see what it has to offer in a college experience.For more, visit CSUSMCougars.com.