sentences:  There was high expectations for the Blue Riband race of the Golden Jubilee TT with the 8 lap (301.86 miles) 1957 Senior TT Race.As Geoff Duke had been injured at Imola at an Easter race meeting the works ride in the factory Gilera team had passed to Bob McIntyre.During the 1955 Isle of Man TT, Duke was credited with the first lap of the Snaefell mountain course at an average speed of 100 mph.