Super Bowl IV was the fourth AFL-NFL World Championship Game in American Professional Football, and the second one (after Super Bowl III) to officially bear the name "Super Bowl". This was the final AFL-NFL World Championship Game before the National Football League (NFL) and the American Football League (AFL) merged into one combined league after the season.
The game was played on January 11, 1970, at Tulane Stadium in New Orleans, Louisiana. This was the first Super Bowl played without the standard week off after the conference championship games (league championship games at the time). Strangely enough, the AFL had a week off between its divisional playoffs (the NFL played its conference championship games during the AFL's off-week) and league championship game. The AFL started its 1969 season a week earlier than the NFL, and thus had an extra week to deal with during the post-season. This would be the last Super Bowl played without the week off until Super Bowl XVII.
The AFL champion Kansas City Chiefs (11-3) defeated the NFL champion Minnesota Vikings (12-2), 23–7. Even though the Vikings were 13-point favorites coming into the game, the Chiefs defense dominated the game by limiting the Minnesota offense to only 67 rushing yards, forcing 3 interceptions, and recovering 2 fumbles. The victory by the AFL evened the Super Bowl series with the NFL at two games apiece.
Kansas City's Len Dawson became the fourth consecutive winning quarterback to be named Super Bowl MVP. He completed 12 of 17 passes for 142 yards and one touchdown, with 1 interception. Dawson also recorded 3 rushing attempts for 11 yards.
The crowd of 80,562 was a Super Bowl record for attendance.