The International Soccer League was a U.S. based soccer league which was formed in 1960 and collapsed in 1965. The league, affiliated with the American Soccer League, featured guest teams primarily from Europe and some from Asia, South America, Canada and Mexico.
In 1960, William D. Cox, a wealthy U.S. businessman and former owner of the Philadelphia Phillies, a U.S. baseball team, saw a potential market in the United States for top-level soccer. Recognizing that U.S. teams did not play at a sufficiently high level to attract the attention of most fans, he began to consider the possibility of importing European and South American teams during their league off-seasons. Traditionally, tours by European clubs in the northeast United States had drawn well and Cox decided to pursue this approach.
However, soccer in the U.S. was run by the U.S. Soccer Football Association (USSFA). As a member of the soccer's international governing organization, FIFA, the USSFA had the sole power in the U.S. to authorize the creation of a new league, and any league created without USSFA authority would be declared an "outlaw league". Any person playing in an "outlaw league" would then be banned from playing in any other league or team affiliated with FIFA, and as nearly every league and team in the world was affiliated with the world soccer body, this would effectively ban a player from playing soccer anywhere.
To get USSFA approval, Cox worked through the existing American Soccer League, a USSFA-recognized league. This went so far that in 1961, the ASL scheduled only one game during the ISL season in order to keep from drawing fan support from the league.[1] Each year, the ISL played two halves to its season, with different sets of teams; the top team from each half played each other in a season-ending championship game. In order to give the American fans a greater stake in the league, Cox also decided to enter a team of U.S.-based players; this team, called variably New York, the New Yorkers and the New York Americans, was usually a mix of U.S.-based European professionals with some native all-stars. Cox also gained regional television coverage, and the associated revenue stream. While the games were initially played in the New York metropolitan area, as interest in the ISL increased, he expanded the league to Chicago, Detroit, Boston and Los Angeles.