Question: 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?

Context paragraphs:
England–Scotland football rivalry: The England–Scotland football rivalry is a sports rivalry that exists between their respective national football teams.  It is the oldest international fixture in the world, first played in 1872 at Hamilton Crescent, Glasgow.  The history of the British Isles has led to much rivalry between the nations in many forms, and the social and cultural effects of centuries of antagonism and conflict between the two has contributed to the intense nature of the sporting contests.  Scottish nationalism has also been a factor in the Scots' desire to defeat England above all other rivals, with Scottish sports journalists traditionally referring to the English as the "Auld Enemy".

Michigan–Ohio State football rivalry: The Michigan–Ohio State football rivalry, known as The Game by some followers, is an American college football rivalry game played annually by the Wolverines of the University of Michigan and the Buckeyes of The Ohio State University.  It has attracted particular national interest over the last four decades as most of the games have determined the Big Ten Conference title and the resulting Rose Bowl match ups, and many have influenced the outcome of the national college football championship.  The game was ranked by ESPN in 2000 as the greatest North American sports rivalry.

Ghana-Nigeria football rivalry: The Ghana–Nigeria football rivalry is a sports rivalry that exists between the national football teams of Ghana and Nigeria, as well as their respective sets of fans.  The sport has been played since prior to both countries' respective independence, and the match-up is among the oldest and most proliferate rivalries in African football.  The football competition reflects the long-standing socio-economic rivalry between the two nations, the two of only four Anglophone nations in West Africa and home to the largest populations in the region.

Argentina–Brazil football rivalry: The Argentina–Brazil rivalry is a highly competitive sports rivalry that exists between the national football teams of the two countries, as well as their respective sets of fans.  Games between the two teams, even those that are only friendly matches, are often marked by notable and sometimes controversial incidents.  This rivalry is also called the "Battle of the South Americans."  FIFA have described it as the "essence of football rivalry", while "ESPN FC" ranked it top of their list of rivalries between national sides.

The Rivalry (Lehigh–Lafayette): The Rivalry is an American college football rivalry game played by the Lafayette Leopards football team of Lafayette College and the Lehigh Mountain Hawks football team of Lehigh University.  It is the most-played football rivalry in the nation and the longest uninterrupted annual rivalry series.  As of 2016, "The Rivalry" has been played 152 times since 1884 with only a single interruption in 1896.  The college's football teams met twice annually (except 1891, when they played three games, and 1896, when they did not play at all) until 1901.  The two institutions are located seventeen miles apart in the Lehigh Valley in eastern Pennsylvania.  Though primarily alluding to football, "The Rivalry" pertains to a meeting between the two schools in all sports and other endeavors.

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.

Eagles–Giants rivalry: The Eagles–Giants rivalry is a National Football League (NFL) rivalry between the Philadelphia Eagles and New York Giants.  The rivalry began in 1933 with the founding of the Eagles, and slowly strengthened when both teams came to relative prominence in the 1940s and 1950s.  The two teams have played in the same division in the NFL every year since 1933.  The ferocity of the rivalry can also be attributed to the geographic New York-Philadelphia rivalry, which is mirrored in Major League Baseball's Mets–Phillies rivalry and the National Hockey League's Flyers–Rangers rivalry.  It is ranked by NFL Network as the number one rivalry of all-time and "Sports Illustrated" ranks it amongst the top ten NFL rivalries of all-time at number four, and according to ESPN, it is one of the fiercest and most well-known rivalries in the football community.

Carolina–Duke rivalry: The Carolina–Duke rivalry refers to the rivalry between the University of North Carolina-Chapel Hill Tar Heels (Carolina) and Duke University Blue Devils (Duke).  It most often refers to the athletic rivalries between the Duke Blue Devils and North Carolina Tar Heels athletic teams.  The Carolina–Duke rivalry is fierce, particularly in men's college basketball.  It is considered one of the most intense rivalries in all of sports: a poll conducted by ESPN in 2000 ranked the basketball rivalry as the third greatest North American sports rivalry, and "Sports Illustrated on Campus" named it the #1 "Hottest Rivalry" in college basketball and the #2 rivalry overall in its November 18, 2003 issue.  The intensity of the rivalry is augmented by the proximity of the two universities—they are located only ten miles apart along U.S. Highway 15–501 (also known as Tobacco Road) or eight miles apart in straight-line distance.  In addition, both Duke and Carolina are considered highly prestigious universities, which, coupled with their vastly different funding structures and cultures—Carolina is a public school while Duke is private—contributes to the ferocity of the rivalry.

Australia–Japan football rivalry: The Australia–Japan football rivalry is a sports rivalry that exists between the national association football teams of each country, regarded as one of Asia's biggest football rivalries.  The rivalry is a relatively recent one, born from a number of highly competitive matches between the two teams since Australia joined the Asian Football Confederation in 2006.  The two teams have played each other in several significant matches, including a World Cup group stage match and the 2011 Asian Cup Final.

Hampden–Sydney vs. Randolph–Macon rivalry: The Hampden–Sydney vs. Randolph–Macon rivalry is a sports rivalry between the Hampden–Sydney College Tigers and the Randolph–Macon College Yellow Jackets.  The college football rivalry between the NCAA Division III schools, often known simply as "The Game", dates to 1893 and has been called the oldest small-school rivalry in the Southern United States.  The rivalry now crosses all sports, with the men's basketball series in particular gaining national attention.

Supporting paragraphs: 1973 Ohio State vs. Michigan football game Michigan–Ohio State football rivalry
Answer: The Ten Year War