The Buffalo Bills are a professional American football team based in the Buffalo–Niagara Falls metropolitan area. They compete in the National Football League as a member club of the league’s American Football Conference East division. The team plays its home games at Bills Stadium in Orchard Park, New York.
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As a member of the American Football League (AFL), the Bills won two league championships (1964 and 1965), and, while playing in the NFL (after the merger of the AFL and the NFL in 1970), they appeared in a record four consecutive Super Bowls (1991–94), losing on each occasion.
The Bills’ name is derived from an All-America Football Conference (AAFC) franchise from Buffalo that was in turn named after western frontiersman Buffalo Bill. … The Bills won consecutive AFL Championships in 1964 and 1965, the only major professional sports championships from a team representing Buffalo.