 On December 5, 2009, the Texas Longhorns defeated the Nebraska Cornhuskers 13–12 in the 2009 Big 12 Championship Game, the first to be held in the stadium with attendance announced at 76,211.The following year, on December 4, 2010, the Oklahoma Sooners and Nebraska Cornhuskers rekindled their rivalry as the Sooners won 23–20 in the final Big 12 Championship game until the 2017 season.The stadium was scheduled to host the games through the 2013 season, but the realignment of the Big 12 Conference to 10 teams meant they were not allowed to host a championship game because of NCAA rules requiring conferences to have at least 12 teams divided into two divisions in order to stage a championship game.