Rooney, Zlatan Ibrahimović, Gareth Bale, Lorenzo Insigne, and Xherdan Shaqiri. The best American soccer players enter the U.S. Soccer Hall of Fame. The Major Arena Soccer League (MASL) is a North American professional indoor soccer league. MASL is the highest level of arena soccer in the North America and the world. Ice hockey Ice hockey, usually referred to in the U.S. simply as "hockey", is another popular sport in the United States. In the U.S. the game is most popular in regions of the country with a cold winter climate, namely the northeast and the upper Midwest. However, since the 1990s, hockey has become increasingly popular in the Sun Belt due in large part to the expansion of the National Hockey League to the southern U.S., coupled with the mass relocation of many residents from northern cities with strong hockey support to these Sun Belt locations. The NHL is the major professional hockey league in North America, with 25 U.S.-based teams and 7 Canadian-based teams competing for the Stanley Cup. While NHL stars are still not as readily familiar to the general American public as are stars of the NFL, MLB, and the NBA, average attendance for NHL games in the U.S. has surpassed average NBA attendance in recent seasons, buoyed in part by the NHL Winter Classic being played in large outdoor stadiums. Minor league professional hockey leagues in the U.S. include the American Hockey League and the ECHL. Additionally, nine U.S.-based teams compete in the three member leagues of the Canadian Hockey League, a "junior" league for players aged sixteen to twenty. College hockey has a regional following in the northeastern and upper midwestern United States. It is increasingly being used to develop players for the NHL and other professional leagues (the U.S. has junior leagues, the United States Hockey League and North American Hockey League, but they are more restricted to protect junior players' college eligibility). The Frozen Four is college hockey's national championship. The U.S. now has more youth hockey players than all other countries, excluding Canada, combined. USA Hockey is the official governing body for amateur hockey in the United States. The United States Hockey Hall of Fame is located in Eveleth, Minnesota. Internationally, the United States is counted among the Big Six, the group of nations that have historically dominated international ice hockey competition. (The others include Canada, Finland, Sweden, the Czech Republic, and