The athletic program of the University of California, Berkeley maintains several fierce and deeply historical rivalries across multiple sports, with its primary and most celebrated opponent being Stanford University. This cross-bay showdown is highlighted by the annual "Big Game" in football, where both teams compete intensely for the cherished Stanford Axe trophy, as well as high-stakes matchups across basketball, volleyball, and Olympic sports. Additionally, Cal shares spirited conference and regional rivalries with other Pac-12 and collegiate conference opponents, fueling massive alumni engagement, school pride, and unforgettable tradition.