A Welsh under-23 international, Gammon's spent seven years with Cardiff City before a broken leg ended his professional career in 1965.
Gammon was born in Swansea, but began his career at Cardiff City, after being spotted playing for Mumbles Boys Club at the age of sixteen.
The following season he scored his first, and only, goal for Cardiff in a 4–4 draw with Stoke City and helped the club gain promotion to Division One.
[1] In February 1961, he suffered a major fracture in his leg after colliding with Denis Law during a league match against Manchester City.
[4] He left the club in December 1971, stepping down as manager after six years at Rockingham Road, being replaced by Ron Atkinson.