Sports-related curses
The Buffalo sports curse is an explanation for Buffalo's inability to win a Super Bowl, Stanley Cup, or an NBA championship. Those who believe in the Buffalo curse cite as examples the four consecutive Super Bowl losses by the Buffalo Bills for the 1990–1993 seasons (and the team's failure to qualify for the NFL playoffs from 2000 to 2017), as well as the failure of the Buffalo Sabres ever to win the Stanley Cup (despite winning the Presidents' Trophy for most regular-season points in 2006–07). The Bills, however, won two American Football League (AFL) titles (1964 and 1965), the latter occurring just months before an agreement was reached to merge the AFL and the National Football League (NFL) (Bills owner Ralph Wilson initiated the talks to merge the two leagues, according to the Pro Football Hall of Fame). In spite of that, it has been argued that this was achieved when the AFL was in its infancy as an upstart league, garnering little, if any, national attention before merging with the established NFL, and that even if they are considered to be at par, since there would be no Super Bowl until after the 1966 season, the Bills could be no greater than co-champions. There have been conflicting suggestions on how the Bills would have fared against the Green Bay Packers or Cleveland Browns, much as there have been disputes over how well the San Diego Chargers would have played against the Bears in 1963, had the Super Bowl existed at that time.
Wild card (sports)
While not a wild card team, the 1969 Kansas City Chiefs were the first non-division winner to win the Super Bowl. They finished second in the Western Division of the American Football League, and in that season, the last before the merger, the AFL went from having its two division winners meeting for the league title to adding a second round in which the second place team in each division qualified for the post-season. These teams played cross-division in the semifinal round. Thus the Chiefs, who finished second in the West, defeated the East Division champion New York Jets in the AFL semifinals and then defeated the West Division champion Oakland Raiders to advance to Super Bowl IV, where they beat the Minnesota Vikings. Because the term "wild card" was not instituted until the following year, the Chiefs are not included in the above list, but are recognized as the first team to win the Super Bowl without winning a division title.