Judges played his amateur football with the Scarborough Rams. He had a 14 year career with Montreal and the Toronto Argonauts from 1968 to 1982. He played in 6 Grey Cup games, winning 3, in 1970, 1974 and 1977. In 1978 Gordon was chosen the Alouettes Most Valuable Player.
He won the 2002 NFL/CFL High School Coach of the Year award for his work with St. Mary Catholic Secondary School. His son, James Judges, was selected by the Alouettes in the fourth round (31st overall) in the 2007 CFL Draft and signed in March, 2008.