Dewsbury Grayshon played at in
Dewsbury's 22–13 victory over
Leeds in the Championship final during the
1972–73 season at
Odsal Stadium,
Bradford on Saturday 19 May 1973. He played at in Dewsbury's 9–36 defeat by Leeds in the
1972–73 Yorkshire Cup final at Odsal Stadium, Bradford on Saturday 7 October 1972. Grayshon played in Dewsbury's 2–22 defeat by
St. Helens in the
1975 BBC2 Floodlit Trophy Final at
Knowsley Road,
St. Helens on Tuesday 16 December 1975.
Bradford Northern Grayshon played at in Bradford Northern's 5–10 defeat by
Castleford in the
1981–82 Yorkshire Cup final at
Headingley Rugby Stadium,
Leeds on Saturday 3 October 1981, played at in the 7–18 defeat by
Hull F.C. in the
1982–83 Yorkshire Cup final at
Elland Road, Leeds on Saturday 2 October 1982, and played at (replaced by
substitute David Hobbs) in the 12–12 draw with
Castleford in the
1987–88 Yorkshire Cup Final at Headingley on Saturday 17 October 1987 (he did not play in the replay). He played at in Bradford Northern's 6–0 victory over
Widnes in the
1979–80 John Player Trophy final at Headingley on Saturday 5 January 1980.
Featherstone Rovers Grayshon played at in
Featherstone Rovers' 14–20 defeat by Bradford Northern in the
1989–90 Yorkshire Cup final at Headingley on Sunday 5 November 1989.
International honours Grayshon won
caps for
England while at Dewsbury in the
1975 Rugby League World Cup against Wales, France, New Zealand, and Australia, in 1977 against Wales, while at
Bradford Northern in 1979 against Wales, and France, in 1980 against Wales (sub), and France, in 1981 against Wales, and won caps for
Great Britain while at Bradford Northern in 1979 against Australia (2 matches), and New Zealand (3 matches), in 1980 against New Zealand (2 matches), in 1981 against France (2 matches), in 1982 against Australia (2 matches), while at Leeds in 1985 against New Zealand (2 matches). ==Personal life==