text: Using a dazzling I-formation offense and a smothering defense, the Chiefs claimed a dominating 31–7 victory in the AFL title game at Buffalo on New Year's Day, 1967. That victory propelled Kansas City to the first AFL-NFL World Championship Game, later known as the Super Bowl. At the Los Angeles Memorial Coliseum, the Chiefs met Vince Lombardi's powerful Green Bay Packers of the National Football League on January 15, 1967. The Chiefs played the Packers close for a half, trailing 14–10, but Green Bay took control in the final two quarters, winning the game by a score of 35–10.
  For 1967, the club's special teams got a boost with the addition of kicker Jan Stenerud, and kick returner Noland "Super Gnat" Smith. The Chiefs' first regular season game against an NFL team resulted in a commanding 66–24 Chiefs victory against the Chicago Bears at Municipal Stadium on August 23. Injuries again hit the club hard during the regular season as the Chiefs clawed their way to a 9–5 record.
  Interest in the team skyrocketed following the team's appearance in the AFL-NFL Championship Game, forcing an increase in seating capacity at Municipal Stadium from 40,000 to 47,000. In June, Jackson County voters approved a $43 million bond issue for construction of a sports complex to be completed by 1972. Eastern Jackson County was chosen as the site of the Chiefs and Royals' new stadiums, and groundbreaking ceremonies took place in July with plans calling for a unique "rolling roof" design (which was later scrapped).