After the UCLA women’s beach volleyball team was upset in the NCAA Tournament last season, the Bruins made a pledge to Maggie Boyd about her last college season. We are going to have your back. On Sunday, in a stunning display of dominance, they made good on that promise. UCLA beach volleyball players Kaley Mathews (9) and Ensley Alden celebrate Sunday in Gulf Shores, Ala. With a sweep of top-seeded Stanford that took less than an hour, the third-seeded Bruins won their third national championship in the sport and first since 2019. In a bit of serendipity on the beaches of Gulf Shores, Ala., the No. 1 pair of Boyd and Sally Perez clinched the title, sending teammates sprinting onto the court in celebration. UCLA’s three national titles in women’s beach volleyball trail only rival USC’s six championships. The Bruins have reached the title game six times since the sport’s debut NCAA season in 2016. This was Jenny Johnson Jordan’s first title in her third season as UCLA’s head coach.…