Origins on game day When the NFL began its 41st season in , it had a new and unwanted rival: the
American Football League. The NFL had successfully fended off several other rival leagues in the past, and so the older league initially ignored the new upstart and its eight teams, figuring it would be made up of nothing but NFL rejects, and fans were unlikely to prefer it to the NFL. But unlike the NFL's prior rivals, the AFL survived and prospered, in part by signing "NFL rejects" who turned out to be highly talented players the older league had badly misjudged. Soon the NFL and AFL found themselves locked in a massive bidding war for the top free agents and prospects coming out of college. Originally, there was a tacit agreement between the two not to raid each other by signing players who were already under contract with a team from an opposing league. This policy broke down in early 1966 when the NFL's
New York Giants signed
Pete Gogolak, a placekicker who was under contract with the AFL's
Buffalo Bills. The AFL owners considered this an "act of war" and immediately struck back, signing several contracted NFL players, including eight of their top quarterbacks. Eventually, the NFL had enough and started negotiations with the AFL in an attempt to resolve the issue. As a result of the negotiations, the leagues signed a
merger agreement on June 9, 1966. Among the details, both leagues agreed to share a
common draft to end the bidding war for the top college players, as well as merge into a single league after the season. In addition, an "AFL–NFL World Championship Game" was established, in which the AFL and NFL champions would play against each other in a game at the end of the season to determine which league had the best team. Los Angeles wasn't awarded the game until December 1, less than seven weeks before the kickoff; likewise, the date of the game was not set until December 13. This was in addition to the league championship money earned two weeks earlier: the Packers' shares were $8,600 each and the Chiefs' were $5,308 each.
Kansas City Chiefs The Chiefs entered the game after an 11–2–1
regular season and a decisive 31–7 road win over the defending AFL champion
Buffalo Bills in the
AFL championship game on
New Year's Day. The Chiefs' high-powered offense led the AFL in points scored (448) and total rushing yards (2,274). Their trio of
running backs,
Mike Garrett (801 yards),
Bert Coan (521 yards), and
Curtis McClinton (540 yards) all ranked among the top-ten rushers in the AFL. Quarterback
Len Dawson was the top-rated passer in the AFL, completing 159 of 284 (56%) of his passes for 2,527 yards and 26 touchdowns. Wide receiver
Otis Taylor provided the team with a great deep threat by recording 58 receptions for 1,297 yards and eight touchdowns. Receiver
Chris Burford added 58 receptions for 758 yards and eight touchdowns, and tight end
Fred Arbanas, who had 22 catches for 305 yards and four touchdowns, was one of six Chiefs offensive players who were named to the All-AFL team. The Chiefs' offensive line was led by tackle
Jim Tyrer, who had been selected to the AFL Pro Bowl for the 5th time in his career. The Chiefs also had a strong defense, with All-AFL players
Jerry Mays and
Buck Buchanan anchoring their line. Linebacker
Bobby Bell, who was also named to the All-AFL team, was great at run stopping and pass coverage. The strongest part of their defense, though, was their secondary, led by All-AFL safeties
Johnny Robinson and
Bobby Hunt, who each recorded 10 interceptions, and
Fred Williamson, who recorded four. Their head coach was none other than
Hank Stram.
Green Bay Packers The Packers were an NFL
dynasty, turning around what had been a losing team just eight years earlier. The team had posted an NFL-worst 1–10–1 record in
1958 before head coach
Vince Lombardi was hired in January 1959. "Their offense was like a conga dance", one sportswriter quipped. "1, 2, 3and kick." Lombardi was determined to build a winning team. During the preseason, he signed
Fred "Fuzzy" Thurston, who had been cut from three other teams, but ended up becoming an All-Pro left guard for the Packers. Lombardi also made a big trade with the
Cleveland Browns which brought three players to the team who would become cornerstones of the defense: linemen
Henry Jordan,
Willie Davis, and
Bill Quinlan. Lombardi's hard work paid off, and the Packers improved to a 7–5 regular-season record in
1959. They surprised the league during the following year by making it to the
1960 NFL Championship Game. Although the Packers lost, 17–13, to the
Philadelphia Eagles, they had sent a clear message they were no longer losers. The Packers went on to win NFL Championships in
1961,
1962,
1965, and
1966. Packers veteran quarterback
Bart Starr was the top-rated quarterback in the NFL for 1966, and won the
NFL Most Valuable Player Award, completing 156 of 251 (62.2%) passes for 2,257 yards (9.0 per attempt), 14 touchdowns, and only three interceptions. His top targets were wide receivers
Boyd Dowler and
Carroll Dale, who combined for 63 receptions for 1,336 yards. Fullback
Jim Taylor was the team's top rusher with 705 yards, adding four touchdowns, and caught 41 passes for 331 yards and two touchdowns. (Before the season, Taylor had informed the team instead of returning to the Packers in 1967, he would play out his option and sign with the expansion New Orleans Saints. Lombardi, infuriated at what he considered to be Taylor's disloyalty, refused to speak to Taylor the entire season.) The team's starting halfback,
Paul Hornung, was injured early in the season and replaced by running back
Elijah Pitts, who gained 857 all-purpose yards. The Packers' offensive line was also a big reason for the team's success, led by All-Pro guards
Jerry Kramer, and Fuzzy Thurston, and tackle
Forrest Gregg. The Packers also had an excellent defense which displayed their talent in the
NFL championship game, stopping the
Dallas Cowboys on four consecutive plays starting from the Packers' 2-yard line on the final drive to win the game.
Lionel Aldridge had replaced Quinlan, but Jordan and Davis still anchored the defensive line; linebacker
Ray Nitschke excelled at run stopping and pass coverage, while the secondary was led by
Herb Adderley and
Willie Wood. Wood was another example of how Lombardi found talent nobody else could see. Wood had been a quarterback in college and was not drafted by an NFL team. When Wood joined the Packers in 1960, he was converted to a
free safety and went on to make the All-Pro team nine times in his 12-year career.
Pregame news and notes Many people considered it fitting the Chiefs and the Packers would be the teams to play in the first AFL–NFL World Championship Game. Chiefs owner
Lamar Hunt had founded the AFL, while the Packers were widely considered one of the best teams in NFL history (even if they could not claim to be founding members of their league, as the Packers joined the NFL in 1921, a year after the league's formation). Lombardi was under intense pressure from the entire NFL to make sure the Packers not only won the game but preferably won big to demonstrate the superiority of the NFL. CBS announcer
Frank Gifford, who interviewed Lombardi before the game, said Lombardi was so nervous, "he held onto my arm and he was shaking like a leaf. It was incredible." The Chiefs saw this game as an opportunity to show they were good enough to play against any NFL team. One player who was looking forward to competing in this game was Len Dawson, who had spent three years as a backup in the NFL before joining the Chiefs. However, the Chiefs were also nervous. Linebacker
E. J. Holub said, "the Chiefs were scared to death. Guys in the tunnel were throwing up." The Packers practiced at
UC Santa Barbara, and the Chiefs at
Veterans Field in
Long Beach. The temperature was mild with clear skies. The two teams played with their respective footballs from each league; the Chiefs' offense used the AFL ball, the slightly narrower and longer
J5V by
Spalding, and the Packers played with the NFL ball, "
The Duke" by
Wilson. The AFL's two-point
conversion rule was not in force; the NFL added the two-point conversion in and it was first used in the Super Bowl (
XXIX) that season, in January 1995. This was the only Super Bowl where the numeric yard markers were five yards apart, rather than ten as is customary today. In , marking yard lines ending in "5" was disallowed in the NFL in order to standardize field markings. It was also the last professional gridiron game played with double-support goalposts. The
"slingshot" goalpost, with a single support, had made its debut a few weeks before Super Bowl I in the
1966 CFL playoffs. It became standard across all three professional leagues then operating in . Tickets for this game were priced at twelve, ten, and six
dollars, which was equivalent to $109, $90, and $55 in 2023 when adjusted for inflation. ==Broadcasting==