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.