The Broncos were barely competitive during their 10-year run in the AFL and their first seven years in the NFL, never making the playoffs. They did not have a winning season until 1973. Four years later, in 1977, they made 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 six losing records in 40 seasons. They have won seven AFC Championships and two Super Bowls, and have four players in the Pro Football Hall of Fame: John Elway, Floyd Little, Gary Zimmerman, and Shannon Sharpe.