The Colorado–Nebraska football rivalry is an American college football rivalry between the Colorado Buffaloes and Nebraska Cornhuskers. The teams first played in 1898, and began competing annually as conference opponents in 1948. The rivalry intensified in the 1980s as Colorado improved under head coach Bill McCartney, reaching its peak in the 1990s with several top-ten meetings. Conference realignment placed the teams in the same division, where they continued to meet annually through 2010, after which Colorado moved to the Pac-10 and Nebraska moved to the Big Ten.