North American Soccer League. They now play as an amateur club in the National Premier Soccer League. In 2017, Atlanta United FC began play as Atlanta's first premier-division professional soccer club since the Chiefs. They won MLS Cup 2018, defeating the Portland Timbers 2–0. Fan reception has been very positive; the team has broken several single-game and season attendance records for both MLS and the U.S. Open Cup. The club is estimated by Forbes to be the most valuable club in Major League Soccer. In ice hockey, Atlanta has had two National Hockey League franchises, both of which relocated to a city in Canada after playing in Atlanta for fewer than 15 years. The Atlanta Flames (now the Calgary Flames) played from 1972 to 1980, and the Atlanta Thrashers (now the Winnipeg Jets) played from 1999 to 2011. The Atlanta Gladiators, a minor league hockey team in the ECHL, have played in the Atlanta suburb of Duluth since 2003. The ASUN Conference moved its headquarters to Atlanta in 2019. Several other, less popular sports also have professional franchises in Atlanta. The Georgia Swarm compete in the National Lacrosse League. In Rugby union, on September 21, 2018, Major League Rugby announced that Atlanta was one of the expansion teams joining the league for the 2020 season named Rugby ATL. while in Rugby league, on March 31, 2021, Atlanta Rhinos left the USA Rugby League and turned fully professional for the first time, joining the new North American Rugby League. Atlanta has long been known as the "capital" of college football in America. It is home to four-time national champion Georgia Tech Yellow Jackets football and the Georgia State Panthers. Also, Atlanta is within a few hours driving distance of many of the universities that make up the Southeastern Conference, college football's most profitable and popular conference, and annually hosts the SEC Championship Game. Other annual college football events include the Chick-fil-A Kickoff Game, the Celebration Bowl, the MEAC/SWAC Challenge, and the Chick-fil-A Peach Bowl which is one of College Football's major New Year's Six Bowl games and a college football playoff bowl. Atlanta additionally hosted the 2018 College Football Playoff National Championship and will be the host city again in 2025. Atlanta regularly hosts a variety of sporting events. Most famous was the Centennial 1996 Summer Olympics. The city has hosted the Super Bowl three times: Super Bowl XXVIII in 1994,