Retro & Vintage Sports Apparel

The National Football League (NFL) is the largest professional American football league in the world. It is an unincorporated association controlled by its members. It was formed by eleven teams in 1920 as the American Professional Football Association (the league changed the name to American Professional Football League in 1921 and then settled on its current name in 1922). The league currently consists of thirty-two teams from American cities and regions, divided evenly into two conferences - the American Football Conference (AFC) and National Football Conference (NFC) - of four four-team divisions.

The National Collegiate Athletic Association (NCAA, often pronounced "N-C-Double-A") is a voluntary association of about 1,200 institutions, conferences, organizations and individuals that organizes the athletic programs of many colleges and universities in the United States and potentially beginning in 2008, Canadian universities. Its headquarters are located in Indianapolis, Indiana, and it is currently under the leadership of president Myles Brand. The NCAA is the largest collegiate athletic organization in the world, and because of the great popularity of college sports among spectators in the United States, it is far more prominent than most national college sports bodies in other countries.

Its predecessor, the Intercollegiate Athletic Association of the United States (IAAUS), was established on March 31, 1906 to set rules for amateur sports in the United States. When then-president Theodore Roosevelt's own son, Ted, broke his collar bone playing football at Harvard, Roosevelt became aware of the growing number of serious injuries and deaths occurring in collegiate football. He brought the presidents of the three major Ivy League universities, Harvard, Yale and Princeton to several meetings at the White House in October, 1905, to discuss steps to make college athletics safer. The IAAUS was created as one of the outcomes of those meetings. The IAAUS became the National Collegiate Athletic Association in 1910.

Founded in 1869, Major League Baseball (MLB) is the highest level of play in North American professional baseball. More specifically, Major League Baseball refers to the organization that operates North American baseball's two major leagues, the National League and the American League, by means of a joint organizational structure which has existed between them since 1903.

Major League Baseball teams play a 162-game season, which generally begins on the first Sunday in April and ends on the first Sunday in October, with playoffs played in October and early November. The two leagues follow the same rules, with one exception: the American League operates under the Designated Hitter Rule, while the National League does not. Utilization of the DH Rule in Interleague, All-Star and World Series games is determined by the home team's league rules. In 2000, the American and National Leagues were officially disbanded as separate legal entities with all rights and functions consolidated in the commissioner's office. MLB effectively operates as a single league and as such it constitutes one of the major professional sports leagues of North America.

The National Basketball Association (NBA) is North America's premier professional men's basketball league, composed of thirty teams. Twenty-nine teams play in the U.S., while one plays in Canada. It is an active member of USA Basketball (USAB), which is recognized by the International Basketball Federation as the National Governing Body (NGB) for basketball in the United States. The NBA is one of the four major North American professional sports leagues, which also includes the NHL, the NFL and MLB.

The league was founded in New York City, on June 6, 1946 as the Basketball Association of America (BAA). The league adopted the name National Basketball Association in the autumn of 1949 after merging with the rival National Basketball League.

The National Hockey League (NHL) (French: Ligue nationale de hockey (LNH)) is a professional ice hockey league composed of 30 teams in North America. It is considered to be the premier professional ice hockey league in the world, and one of the North American major professional sports leagues. The Stanley Cup, the oldest professional sports trophy in North America, is awarded annually to the league champion at the end of each season.

The league was founded in 1917 in Montreal, Quebec, Canada with four teams, and through a series of expansions, contractions and relocations, the league is now composed of 30 teams, 24 of which are based in the United States and six in Canada. After a labour dispute that led to the cancellation of the entire 2004-05 season, the league has staged a successful comeback, including revenue and profit growth.

Major League Soccer (MLS) is a professional soccer league founded in 1993 with thirteen teams in the United States and one team in Canada. MLS represents the top tier of the American and Canadian Soccer Pyramids and is comprised of 14 clubs, although the league will expand to 16 clubs by 2010, and plans to expand to 18 teams by 2012. Seasons run from late March or early April to November, with teams playing 30 games each.

A total of 16 clubs have competed in Major League Soccer, but only six have won the MLS Cup: D.C. United (4 times), the San Jose Earthquakes (twice), the Los Angeles Galaxy (twice), the Houston Dynamo (twice), the Chicago Fire (once), and the Kansas City Wizards (once). The current Major League Soccer champions are the Houston Dynamo, who won back-to-back titles in 2006 and 2007.