Movistar Yamaha MotoGP's Italian rider Valentino Rossi (C), celebrates winning the MotoGP, alongside second place Pramac Racing's Italian rider Danilo Petrucci (L) and third place Ducati Team's Italian rider Andrea Dovizioso, 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)