Career
He began his career in England, before playing eight seasons in the North American Soccer League. He also earned four caps with the United States. national team between 1972 and 1975. Hamlyn played at least one season with English semi-pro club Cobham.
In 1971, he signed with the Atlanta Chiefs of the North American Soccer League.
While he played only one game in the 1971 season as an amateur and played in all playoff games. He became a regular in the Chiefs’ defense in 1972.
The Chiefs folded at the end of the 1973 season and Hamlyn moved to the Miami Toros. He spent three seasons with the Toros.
He played only two games in 1978 after suffering several knee injuries and retired from playing at the end of the season.
He attempted a comeback with the Cleveland Force of the Major Indoor Soccer League, playing 23 games selected as Second Team All League. After gaining his United States. citizenship, Hamlyn earned four caps with the United States. national team between 1972 and 1975. In 1972, he played in three World Cup qualifiers.
The first was an August 20, 1972 loss to Canada.
That was followed in the next two weeks with a 2–2 tie with Canada and a loss to Mexico. Hamlyn did not play with the national team again until a 7–0 loss to Poland on March 26, 1975.
A month later, he played in a 10–0 loss to Italy, but this was not an official national team game.