Bob Cosgrove was an award winning and all-star offensive lineman in the Ontario Rugby Football Union. A graduate of the University of Montana Cosgrove began his football career in the WIFU with the Calgary Bronks. He turned professional in the east with Toronto Argonauts in 1941, but moved to the ORFU the next season with the Toronto Balmy Beach Beachers, where he was an all-star. Perhaps his best season was 1943 with the wartime Toronto RCAF Hurricanes, when he was again an all-star and winner of the Imperial Oil Trophy as the ORFU most valuable player.