Eastern League - baseball - was created in 1923.
Japanese Baseball League was created in 1935.
Western League - Japanese baseball - was created in 1952.
North Eastern League was created in 1908.
Eastern Wrestling League was created in 1976.
Eastern Junior Hockey League was created in 1993.
North Eastern Hockey League was created in 2003.
Eastern Counties Football League was created in 1935.
Eastern European Hockey League was created in 1995.
Eastern States Hockey League was created in 2003.
Eastern League of Professional Football was created in 1926.
Eastern Indoor Soccer League was created in 1997.