The Rose Bowl Game is an annual American college football bowl game, usually played on January 1 (New Year's Day) at the Rose Bowl in Pasadena, California. When New Year's Day falls on a Sunday, the game is played on Monday, January 2. The Rose Bowl Game is nicknamed "The Granddaddy of Them All" because it is the oldest currently operating bowl game. It was first played in 1902 as the Tournament East–West football game, and has been played annually since 1916. Since 1945, it has been the highest attended college football bowl game. The game is a part of the Pasadena Tournament of Roses Association's "America's New Year Celebration", which also includes the historic Rose Parade. Winners of the game received the Leishman Trophy, named for former Tournament of Roses presidents, William L. Leishman and Lathrop K. Leishman who played an important part in the history of this game.
The Rose Bowl Game has traditionally hosted the conference champions from the Big Ten and Pac-12 conferences (or their predecessors). Since 2002, the Rose Bowl Game has occasionally deviated from its traditional matchups for use in "national championship" systems. In 2002 and 2006 (the 2001 and 2005 seasons), under the Bowl Championship Series (BCS) system, the Rose Bowl was designated as its championship game, and hosted the top two teams determined by the BCS system. Beginning in 2015, the Rose Bowl has been part of the College Football Playoff (CFP) as one of the New Year's Six bowls—the top six major bowl games in the national championship system—hosting one of the semifinal games every three years. During non-CFP years, the Rose Bowl reverts to its traditional Pac-12/Big Ten matchup, unless the champions from those conferences are selected to play in the College Football Playoff.