The Arizona Cardinals are a professional American football team based in the Phoenix metropolitan area. The Cardinals compete in the National Football League (NFL) as a member of the National Football Conference (NFC) West division, and play their home games at State Farm Stadium in Glendale, a suburb northwest of Phoenix. The team was established in Chicago in 1898 as the Morgan Athletic Club, and joined the NFL as a charter member on September 17, 1920. The Cardinals are the oldest continuously run professional football franchise in the United States, as well as one of only two NFL charter member franchises still in operation since the league's founding, the other also from Chicago, the Chicago Bears (the Green Bay Packers were an independent team and did not join the NFL until a year after its creation in 1921). The team moved to St. Louis in and played there until . The team in St. Louis was commonly referred to as the "Football Cardinals", the "Gridbirds" or the "Big Red" to avoid confusion with the Major League Baseball's (MLB) St. Louis Cardinals. Before the season, the team moved west to Tempe, Arizona, a suburb east of Phoenix and played their home games for the next 18 seasons at Sun Devil Stadium on the campus of Arizona State University. In , the team moved to their current home field in suburban Glendale, although their executive offices and training facility remain in Tempe. From 1988 to 2012 (except 2005, when they trained in Prescott), the Cardinals conducted their annual summer training camp at Northern Arizona University in Flagstaff. The Cardinals moved their training camp to State Farm Stadium (then University of Phoenix Stadium) in 2013. The Cardinals have won two NFL championships, both while the team were in Chicago. The first occurred in , but is the subject of controversy, with supporters of the Pottsville Maroons believing that Pottsville should have won the title. Their second, and the first to be won in a championship game, came in , nearly two decades before the first Super Bowl. They returned to the title game to defend in 1948, but lost the rematch 7–0 in a snowstorm in Philadelphia. Since winning the championship in 1947, the team suffered many losing seasons, and currently holds the longest active championship drought of North American sports at 75 consecutive seasons. In 2012, the Cardinals became the first NFL