What is the phrase describing this rivalry between two American college football teams that was ranked by ESPN in 2000 as the greatest North American sports rivalry?
1973 Ohio State vs. Michigan football game The 1973 Ohio State vs. Michigan football game was one of the most controversial games in NCAA history. In this game, both teams were undefeated, with Ohio State ranked 1st, and Michigan ranked 4th. A conference championship, Rose Bowl appearance, and possible national championship was on the line in this monumental game, part of the hotly contested stretch of the rivalry known as The Ten Year War. A then-NCAA record crowd of 105,233 watched the game at Michigan Stadium in Ann Arbor.
Notre Dame–Purdue football rivalry The Purdue-Notre Dame football rivalry is an American college football rivalry between the Purdue Boilermakers football team of Purdue University and Notre Dame Fighting Irish football of the University of Notre Dame.