Career
Wigan Slevin played in Wigan"s 20–2 victory over Huddersfield in the Championship final during the 1949-1950 season at Maine Road, Manchester on Saturday 13 May 1950, played in Wigan"s victory in the Lancashire League during the 1949-1950 season, and played Right-prop, id est (that is) number 10, in the 20–7 victory over Leigh in the 1949 Lancashire Cup final during the 1949-1950 season at Wilderspool Stadium, Warrington on Saturday 29 October 1949. Slevin played Left-second-row, id est (that is) number 11, and scored a try in the 28–5 victory over Warrington in the 1950 Lancashire Cup final during the 1950-1951 season at Station Road, Swinton on Saturday 4 November 1950, and played Right-second-row, id est (that is) number 12 in Wigan"s 10–0 victory over Barrow in the Challenge Cup final at Wembley Stadium, London on Saturday 5 May 1951. Huddersfield Slevin played in Huddersfield"s victory in the Yorkshire League during the 1951-1952 season.
Slevin played Left-prop, id est (that is) number 8 in the 15–10 victory over Saint Helens in the 1953 Challenge Cup final during the 1952-1953 season at Wembley Stadium, London on Saturday 25 April 1953, and played in the 18–8 victory over Batley in the 1952 Yorkshire Cup final during the 1952-1953 season at Headingley Stadium on Saturday 15 November 1952.
Slevin played Left-prop in the 15–8 victory over York in the 1957 Yorkshire Cup final during the 1957-1958 season at Headingley Stadium, Leeds on Saturday 19 October 1957, and played Left-prop in the 10–16 defeat by Wakefield Trinity in the 1960 Yorkshire Cup final during the 1960-1961 season at Headingley Stadium, Leeds on Saturday 29 October 1960. Slevin played in the 12–6 defeat by Wakefield Trinity in the 1962 Challenge Cup final during the 1961-1962 season at Wembley Stadium, London on Saturday 12 May 1962, and in the club"s 14–5 victory over Wakefield Trinity in the Championship final.
= Testimonial match Slevin"s Testimonial match at Huddersfield took place in 1962. All Six Cups "All Six Cups" being the Challenge Cup, Championship, Lancashire Cup, Lancashire League, Yorkshire Cup, and Yorkshire League.
County honours International honours.