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Jerez de la frontera, SPAIN - 4th of May, 2017: Gran Premio Red Bull of Spain. Press conference. In the picture: Giacomo Agostini (Photo by Jose Breton/NurPhoto via Getty Images)

Jerez de la frontera, SPAIN - 4th of May, 2017: Gran Premio Red Bull of Spain. Press conference. 
In the picture: Giacomo Agostini (Photo by Jose Breton/NurPhoto via Getty Images)

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Italian motorcycle racer Giacomo Agostini competes on his MV Agusta 350cc racing bike during the Gauloises Powerbike International race meeting at Brands Hatch circuit in Fawkham, England in October 1977. (Photo by Leo Mason/Popperfoto via Getty Images)

Italian motorcycle racer Giacomo Agostini competes on his MV Agusta 350cc racing bike during the Gauloises Powerbike International race meeting at Brands Hatch circuit in Fawkham, England in October 1977. (Photo by Leo Mason/Popperfoto via Getty Images)

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DAYTONA BEACH, FL - MARCH 1975: Giacomo Agostini of Italy poses at Daytona International Speedway prior to the Daytona 200 motorcycle race. Agostini would go on to score a fourth-place finish in the event. (Photo by ISC Images & Archives via Getty Images)

DAYTONA BEACH, FL - MARCH 1975:  Giacomo Agostini of Italy poses at Daytona International Speedway prior to the Daytona 200 motorcycle race. Agostini would go on to score a fourth-place finish in the event. (Photo by ISC Images & Archives via Getty Images)