Super Bowl IV was an American football game played on January 11, 1970, at Tulane Stadium in New Orleans, Louisiana. It was the fourth and final AFL–NFL World Championship Game in professional football prior to the AFL–NFL merger taking effect the following season. The American Football League (AFL) champion Kansas City Chiefs defeated the National Football League (NFL) champion Minnesota Vikings by the score of 23–7. This victory by the AFL squared the Super Bowl series with the NFL at two games apiece as the two leagues merged after the game. This was the first major professional sports championship won by a Kansas City-based team. Won the Super Bowl IV on January 11, 1970. Wiki link