 The senior men’s and women’s tournaments began on September 4, 2019, while the juniors' division which was sub-hosted by National University held their opening games on November 13 for the boys' tournament and on January 11, 2020 for the newly-formed girls' competition.The men's defending champions Ateneo Blue Eagles won all 14 elimination round games to become the only second men's basketball team to advance to the UAAP Finals outright (after UE in 2008).The remaining Final Four teams figured in the stepladder format to determine Ateneo's finals opponent.