Interborough Rapid Transit Rangers, better known as the IRT Rangers, were an early twentieth century U.S. soccer team sponsored by the New York City Interborough Rapid Transit Company.
In the mid-1920s the Rangers were an amateur team in the Southern New York Soccer Association (SNYSA).
In 1928, the professional American Soccer League boycotted the National Challenge Cup.
This led the United States Football Association (USFA; now USSF) to declare the ASL an “outlaw league”.
Named the Eastern Professional Soccer League, or Eastern Soccer League for short, the ESL was formed around the three suspended ASL teams and several teams, including the IRT Rangers, pulled from the SNYSSA.