Valentine played representative level rugby union (RU) for South of Scotland, and at club level for Hawick Wanderers RFC, Hawick Linden RFC and Hawick RFC as a flanker, and representative level rugby league (RL) for Great Britain and Other Nationalities, and at club level for Huddersfield, Wakefield Trinity and Keighley (captain), as a prop, second-row or loose forward, and coached at club level rugby league (RL) for Britannia Works in 1975 in Huddersfield's Pennine League, and formed the Huddersfield colts team in 1976.
[2] Bob Valentine was born in Hawick, Scotland, and he worked as an electrician.
[3] Rob Valentine represented South of Scotland (RU) while at Hawick RFC, his last match being the 0–8 defeat by New Zealand in the 1963–64 New Zealand rugby union tour match at Mansfield Park, Hawick on Saturday 16 November 1963, and represented Other Nationalities (RL) while at Huddersfield, he played loose forward in the 2–19 defeat by St. Helens at Knowsley Road, St. Helens on Wednesday 27 January 1965, to mark the switching-on of new floodlights.
[4] Rob Valentine played left-prop in Wakefield Trinity's 2–7 defeat by Leeds in the 1973–74 Yorkshire Cup Final during the 1973–74 season at Headingley, Leeds on Saturday 20 October 1973.
Rob Valentine played right-second-row and scored a try in Wakefield Trinity's 11–22 defeat by Halifax in the 1971–72 Player's No.6 Trophy Final during the 1971–72 season at Odsal Stadium, Bradford on Saturday 22 January 1972.