Robinson was playing for Worcestershire's Second XI at the age of 17, and in August 1960 he took 5/7 against Lancashire II, including four wickets in five balls.
In a low-scoring match, he gave a hint as to his future batting ability by scoring 37 from number ten in the order, helping to add 54 for the ninth wicket after Somerset had fallen to 66/8.
[7] With the ball, Robinson's most productive summer was that of 1966, when he finished with 70 first-class wickets at 21.41, including five five-wicket bags and his solitary ten-wicket match haul.
[9] A few weeks earlier, he had recorded his best innings figures, running through Nottinghamshire at Trent Bridge with a remarkable second-innings return of 17.2–14–10–7 as they collapsed from 37/0 to 62 all out.
[13] At the age of 34, his career in senior cricket was over, although he continued to turn out for Somerset's Second XI into his early fifties, captaining that side on a considerable number of occasions.