Battle of Katipunan
The Battle of Katipunan, also known as the Katipunan derby, refers to the school rivalry between Ateneo de Manila University and the University of the Philippines Diliman (UP) began during games and meets that preceded the establishing of the National Collegiate Athletic Association (NCAA), of which both schools were founding members, and continues in the University Athletic Association of the Philippines (UAAP) where both universities compete. After competing in the NCAA for several years, UP left the NCAA to co-found the UAAP. Ateneo joined the UAAP in 1978.