A similar Calgary Rugby Football Club formed in 1907, competing in the AFRU under various names until - while operating as the Calgary Bronks - joining the Regina Roughriders (from the SRFU) and Winnipeg Blue Bombers (from the MRFU) to form the higher-level WIFU in 1936.
Currently, the Calgary and Edmonton franchises play each other two to three times during the regular season and have played each other at least three times in every regular season but 2004 between 1996 and 2016.