Buffalo Bills are a professional football team of U.S.A that led by head coach Buster Ramsey in Buffalo–Niagara Falls metropolitan area and joined the NFL in 1970 as a member of the AFL (American Football League). Through the late 1980s and early 1990s, Buffalo Bills had won four AFC Championships, which were 51:3 against Los Angeles Raiders in 1990 and 10:7 against Denver Broncos in 1991 and Kansas City Chiefs in 1992 at Ralph Wilson Stadium, 29:10 against Miami Dolphins. However, the team had never won a Super Bowls during this period of time.