Denver is home to a variety of sports teams and is one of 13 U.S. cities with teams from four major sports (the Denver metro area is the smallest metropolitan area to have a team in all four major sports). Including MLS soccer, it is one of 10 cities to have five major sports teams. The Denver Broncos of the National Football League have drawn crowds of over 70,000 since their origins in the early 1960s, and continue to draw fans today to their current home Empower Field at Mile High. The Broncos have sold out every home game (except for strike-replacement games) since 1970. The Broncos have advanced to eight Super Bowls and won back-to-back titles in 1997 and 1998, and won again in 2015.