A group of owners led by Lamar Hunt formed the AFL to compete directly with the NFL. The new league aimed to place teams in underserved markets and challenge the NFL for fans, players, and television coverage. This decision set the stage for a decade of competition that eventually pushed both leagues toward merger.
The AFL played its first season in 1960 with eight franchises, creating a full-scale rival to the NFL rather than a short-lived startup. With two major leagues competing, player salaries rose and teams fought for top college talent. This head-to-head competition became the central force driving later unification.
The AFL expanded by awarding a new franchise to Miami, which began play in the 1966 season. Expansion signaled that the AFL was stabilizing and growing, not fading away. It also increased the number of markets and owners invested in a long-term pro football future.
The two leagues announced they would merge, ending a costly battle over players and television money. The agreement kept separate regular seasons temporarily but established a plan for a unified league and a championship game between league winners. This announcement created the roadmap for what became the modern NFL structure.
Soon after merger plans were public, the NFL continued expanding by awarding a team to New Orleans. Adding new franchises helped the combined league reach agreed expansion goals and broaden national reach. The Saints’ creation also reflected growing demand for pro football in new regions.
The AFL champion Kansas City Chiefs played the NFL champion Green Bay Packers in the first championship game between the rival leagues. Green Bay’s win reinforced the NFL’s reputation at the time, but the event created a shared, highly visible endpoint for both leagues’ seasons. This game became the foundation of the Super Bowl as pro football’s biggest stage.
The leagues held their first shared draft, replacing separate drafts that had fueled bidding wars for rookies. A common draft reduced direct competition for new players and supported the merger’s goal of stabilizing costs. It also made the talent pipeline more orderly heading into full league unification.
The AFL granted an expansion team in Cincinnati, led by Paul Brown, to bring the league to ten teams. This expansion mattered because the merger agreement required a balanced structure and enough teams for future conference alignment. The Bengals became one of the last franchises created before full merger operations began.
The New York Jets upset the Baltimore Colts in Super Bowl III, a landmark win for the AFL. The result changed public perception by showing an AFL champion could beat an NFL champion on the biggest stage. This helped smooth the path toward a true merger by reducing the idea of a “major” and “minor” league.
The Kansas City Chiefs defeated the Minnesota Vikings in Super Bowl IV, giving the AFL a second championship win in the interleague era. Coming right before the leagues fully combined, the victory further demonstrated competitive balance. It also served as a symbolic closing chapter of the AFL as an independent league.
Before the 1970 season, the leagues formally combined into one NFL with two conferences: the AFC and NFC. All AFL teams joined the AFC along with three NFL teams (Colts, Browns, and Steelers) to balance the conferences. This reorganization created the basic conference framework still used today.
In the new merged-era NFL, ABC launched Monday Night Football, starting with Jets vs. Browns. A weekly prime-time game expanded the league’s media footprint and made regular-season matchups into national events. This broadcasting shift helped drive the NFL’s growing dominance in American sports culture.
The NFL added the Seattle Seahawks and Tampa Bay Buccaneers, expanding to 28 franchises. This fulfilled a major merger-era commitment to grow the league’s footprint and balance scheduling as the unified NFL matured. Expansion also demonstrated the league’s confidence that pro football could succeed in more markets.
The NFL adopted major rule changes to increase scoring, including limiting how far defenders could contact receivers downfield (often called the “Mel Blount Rule”). These changes encouraged more passing and helped shape the modern, offense-focused NFL style. The adjustments also show how the merged league continued to evolve beyond the merger itself.
The Pittsburgh Steelers defeated the Los Angeles Rams in Super Bowl XIV, ending the 1970s with a clear example of the merged league’s stability and national popularity. By this point, the AFL–NFL merger had produced a unified competition, a dominant championship event, and a steadily expanding footprint. The game serves as a useful endpoint for the 1960–1979 merger-and-expansion story because it reflects the NFL’s fully consolidated modern era by decade’s end.
National Football League: AFL–NFL Merger and Expansion (1960–1979)