Career
Capper turned professional with hometown club Wrexham in 1949, with his first appearance in The Football League coming against Grimsby Town in 1952-1953. When Capper left Wrexham in 1955 after 48 league outings he was awarded a benefit match. After a short spell with non-league Headington United, he returned to professional circles with Lincoln City in January 1956.
After struggling to command a regular place at Sincil Bank, Capper moved to Chester in September 1959 for £1,500.
He competed with the centre back position with George Spruce before retiring from the game through injury in 1961. Capper later joined the Police and then as a security officer at a holiday camp in Prestatyn.