 The game frequently has implications for the conference and national championship races . Since 1945 , at least one of the teams was ranked among the top 25 teams in the nation coming into 60 out of 65 games . Prior to the 2005 game , Texas held an advantage in the all @-@ time series 55 – 39 – 5 , which included a 43 – 35 – 4 edge in Dallas , but Oklahoma had won the 5 previous games , including the two worst losses ever for a Texas team in the series . Those losses had helped build a reputation that Mack Brown was not capable of winning in " Big Games " . Four times during those five years , Texas ' loss to Oklahoma prevented them from playing in the Big 12 Conference Championship Game . One of these two teams appeared in four of the nine BCS national championship games from 1999 to 2007 . 
