Smith spent the vast majority of his professional career with Hull Kingston Rovers, he is the club's appearance record holder, having played 489 games between 1975 and 1991.
During the 1980–81 season, Mike Smith played at centre 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.
Mike Smith played at centre and scored the match winning try in Hull Kingston Rovers' 8–6 victory over Queensland as they toured Papua New Guinea and England part of the 1983–84 Rugby Football League season.
Smith played at centre in the 8–11 defeat by Wigan in the 1985–86 John Player Special Trophy Final during the 1985–86 season at Elland Road, Leeds on Saturday 11 January 1986.
[6] He also played at centre in the 14–15 defeat by Castleford in the 1985-86 Challenge Cup Final during the 1985-86 season at Wembley Stadium, London, on Saturday 3 May 1986, in front of a crowd of 82,134.
[3] In addition to the above Test matches, Mike Smith played at centre in Great Britain's 7–8 defeat by France in the friendly at Stadio Pier Luigi Penzo, Venice on Saturday 31 July 1982.