<Li> Sports Authority Field at Mile High (2011--present) </Li> <P> The Denver Broncos are a professional American football club based in Denver, Colorado . The Broncos compete as a member club of the National Football League (NFL)'s American Football Conference (AFC) West division . They began play in 1960 as a charter member of the American Football League (AFL) and joined the NFL as part of the merger in 1970 . The Broncos are owned by the Pat Bowlen trust and currently play home games at Sports Authority Field at Mile High (formerly known as "Invesco Field at Mile High" from 2001--2011). Prior to that, they played at Mile High Stadium from 1960 to 2000 . </P> <P> The Broncos were barely competitive during their 10 - year run in the AFL and their first seven years in the NFL . They did not complete a winning season until 1973 . In 1977, four years later, they qualified for the playoffs for the first time in franchise history and advanced to Super Bowl XII . Since 1975, the Broncos have become one of the NFL's more successful teams, having suffered only seven losing seasons . They have won eight AFC Championships (1977, 1986, 1987, 1989, 1997, 1998, 2013, 2015, and three Super Bowl championships (1997 (XXXII), 1998 (XXXIII), 2015 (50). However, the Broncos share the NFL record for most Super Bowl losses (5) with the New England Patriots . They have five players in the Pro Football Hall of Fame: John Elway, Floyd Little, Gary Zimmerman, Shannon Sharpe and Terrell Davis . </P> <P> The Denver Broncos were founded on August 14, 1959, when Minor League Baseball owner Bob Howsam was awarded an American Football League (AFL) charter franchise . The Broncos won the first - ever AFL game over the Boston Patriots 13--10, on September 9, 1960 . On August 5, 1967, they became the first - ever AFL team to defeat an NFL team, with a 13--7 win over the Detroit Lions in a preseason game . However, the Broncos were not successful in the 1960s, compiling a record of 39--97--4 in the league . </P>

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