He played club level rugby union for Newport RFC, as a fly-half, and rugby league for Wales, and at club level for Wakefield Trinity, Fulham RLFC, Warrington, Hunslet, Castleford and York, as a goal-kicking fullback or centre.
[1][2] Steve Diamond was born in Hereford, Herefordshire, England, and he worked at British Jeffrey Diamond (BJD) in Wakefield, West Yorkshire, England.
[1] Steve Diamond played at centre in Wakefield Trinity's 3-12 defeat by Widnes in the 1978–79 Challenge Cup Final during the 1978–79 season at Wembley Stadium, London on Saturday 5 May 1979, in front of a crowd of a crowd of 94,218.
[3] Steve Diamond played stand-off, and scored a goal in Castleford's 18-22 defeat by Hull Kingston Rovers in the 1985–86 Yorkshire Cup Final during the 1985–86 season at Elland Road, Leeds on Sunday 27 October 1985.
Steve Diamond holds Fulham RLFC/London Crusaders/London Broncos/Harlequins RL's career goalscoring record; with 309-goals scored between 1981–84, and is one of less than twenty-five Welshmen to have scored more than 1000-points in their rugby league career.