[9] Casey played loose forward in Bradford Northern' 24–2 defeat by Leeds in the 1978–79 Premiership Final during the 1978–79 season at Fartown Ground, Huddersfield on Saturday 27 May 1979.
In January 1980, Casey was re-signed by Hull Kingston Rovers for a record transfer fee of £38,000.
in the 1979–80 Challenge Cup Final during the 1979–80 season at Wembley Stadium, London on Saturday 3 May 1980, in front of a crowd of 95,000.
During the 1980–81 season, Casey played second-row and was captain in Hull Kingston Rovers' 7–8 defeat by Leeds in the 1980–81 Yorkshire Cup Final at Fartown Ground, Huddersfield on Saturday 8 November 1980, played loose forward, and was captain in the 9–18 defeat by Widnes in the 1980–81 Challenge Cup Final at Wembley Stadium, London on Saturday 2 May 1981, and played second-row and was captain and man of the match, winning the Harry Sunderland Trophy, in Hull Kingston Rovers' 11–7 victory over Hull F.C.
in the 1984–85 John Player Trophy Final during the 1984–85 season at Boothferry Park, Hull on Saturday 26 January 1985.
[6] He was the coach in Hull FC's 24–31 defeat by Castleford in the 1986–87 Yorkshire Cup Final during the 1986–87 season at Fartown Ground, Huddersfield on Saturday 11 October 1986.