[2][3] Griffin started his career in rugby union, where he played for Abertillery.
[4] In June 1951, Griffin switched to rugby league and joined Huddersfield.
[1] He spent his entire rugby league career with the club, announcing his retirement during the 1956–57 season.
[5] In rugby league, Griffin won one cap for Wales while at Huddersfield in 1952 against France.
[2] Bill Griffin played at prop in Huddersfield's 18-8 victory over Batley in the 1952 Yorkshire Cup Final during the 1952–53 season at Headingley, Leeds on Saturday 15 November 1952.