Valentino Rossi, one of the most famous sports personality around the globe. He is called the Greatest Of All Time or The GOAT by his Fans. The only rider in history to win 125, 250, 500 and MotoGP™ World Championships, Valentino Rossi dominated MotoGP™ with first Honda and then Yamaha, taking the crown five times in a row until Nicky Hayden won the title in 2006 and then back on top in 2008 and 2009. Also read: Why Rossi is still loved? He uses title "The Doctor" and a lot of his Fans are still not sure why? The following Information is from one of his short documentries. "Since dominating the 500 cc category later known as MotoGP, "The Doctor" has become the nickname of choice for Rossi. Two theories prevail as to why Rossi uses "The Doctor." One is that Rossi adopted the nickname upon having earned a degree, which in Italy entitles one to use the title "Doctor". Another, as spoken by Graziano himself, "The Doctor because, I don