Super Bowl of the Super Bowl, while the Jaguars (1995) and Texans (2002) are both recent NFL expansion teams. (Detroit, Houston, and Jacksonville, however, have hosted a Super Bowl, leaving the Browns the only team to date who has neither played in nor whose city has hosted the game.) The Minnesota Vikings won the last NFL Championship before the merger but lost to the AFL champion Kansas City Chiefs in Super Bowl IV. The Green Bay Packers won the first two Super Bowls (Known as the AFL-NFL World Championship Game for these first two contests), defeating the Kansas City Chiefs and Oakland
Super Bowl nomenclature returned to Roman numerals for Super Bowl LI, following the 2016 regular season. The most recent Super Bowl was Super Bowl LII, on February 4, 2018, following the 2017 regular season. The game was created as a part of a merger agreement between the NFL and its then-rival league, the American Football League (AFL). It was agreed that the two leagues' champion teams would play in the AFL–NFL World Championship Game until the merger was to officially begin in 1970. After the merger, each league was redesignated as a "conference", and the game has since been played between the