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Movistar Yamaha MotoGP's Italian rider Valentino Rossi celebrates on the podium after winning the MotoGP race at the motorcycling British Grand Prix at Silverstone in Northamptonshire, England, on August 30, 2015. Valentino Rossi of Italy moved to the top of the world championship standings with his fourth victory of the season when he triumphed in the British MotoGP at Silverstone on Sunday. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Movistar Yamaha MotoGP's Italian rider Valentino Rossi celebrates on the podium after winning the MotoGP race at the motorcycling British Grand Prix at Silverstone in Northamptonshire, England, on August 30, 2015. Valentino Rossi of Italy moved to the top of the world championship standings with his fourth victory of the season when he triumphed in the British MotoGP at Silverstone on Sunday. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)
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AFP GLYN KIRK

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NORTHAMPTON, ENGLAND - AUGUST 26: Valentino Rossi of Italy and Movistar Yamaha MotoGP talks to the media during a press conference at Silverstone Circuit on August 26, 2017 in Northampton, England. (Photo by Shaun Botterill/Getty Images)

NORTHAMPTON, ENGLAND - AUGUST 26: Valentino Rossi of Italy and Movistar Yamaha MotoGP talks to the media during a press conference at Silverstone Circuit on August 26, 2017 in Northampton, England. (Photo by Shaun Botterill/Getty Images)
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Getty Images Sport Shaun Botterill