The Penn–Princeton men's basketball rivalry is an American college basketball rivalry between the Penn Quakers men's basketball team of the University of Pennsylvania and Princeton Tigers men's basketball team of Princeton University. Having been contested every year since 1903, it is the third oldest consecutively played rivalry in National Collegiate Athletic Association Division I history. Unlike many notable college basketball rivalries, such as Duke–North Carolina, which involves teams that often both get invited to the same NCAA tournaments, Notre Dame–UCLA, which involves geographically remote teams, Illinois–Missouri, which involves non-conference rivals, or Alabama–Auburn, which takes a back seat to the football rivalry, this is a rivalry of geographically close, conference rivals, who compete for a single NCAA invitation and consider the basketball rivalry more important than other sports rivalries between the schools. A head-to-head contest has been the final regularly scheduled game of the Princeton season every year since 1995. Between 1963 and 2007, Princeton or Penn won or shared the Ivy League conference championship every season except 1986 and 1988. The other seasons in which neither team won or shared the Ivy League title are 1957, 1958, 1962, 2008–10, and 2012–2016.