text: The Kansas City Chiefs are a professional American football franchise that began play in 1960 as the Dallas Texans. The team was a charter member of the American Football League (AFL), and now play in the National Football League (NFL). The team is not related to the earlier Dallas Texans NFL team that played for only one season in 1952.
  The Texans won the 1962 AFL Championship and relocated to Kansas City, Missouri the following year, becoming the Chiefs. In 1966, the Chiefs won their second AFL title and appeared in the first AFL-NFL World Championship game (later named Super Bowl I) in January 1967, losing to the Green Bay Packers. In 1969, the Chiefs won the final AFL title and went on to defeat the NFL's heavily favored Minnesota Vikings in Super Bowl IV. The Texans/Chiefs were the most victorious franchise in AFL history, compiling an 87–48–5 record from 1960 to 1969.