Born on January 11, 1933 in Cwmcarn, Greenslade joined Newport from Newbridge in 1955. In his eight seasons with the Rodney Parade outfit, he rarely missed a game and amassed a staggering 285 games for the Gwent side, scoring eight tries.
His solitary Welsh cap came against Scotland in 1962, notable as it was Scotland’s only win in Cardiff (8-3) in an 18-match spell that was to stretch from 1939-80.
The miner was among a number of new faces in the Newport side in 1956 which went onn to claim the unofficial Welsh Championship.
Newport welcomed a number of new players who were to become Welsh internationals in the future – Greenslade along with scrum-half Colin Evans from Blaenavon and full-back Norman Morgan who had just left the Army, all went on to be capped.
It was the forwards who laid the foundation for the success. John Phillips who could hook or prop and alongside Greenslade were valuable members of the team.
Mobile and durable, Greenslade, who also represented the Barbarians and Crawshays, came out of retirement to help Abercarn for a season.