MotoGPクラスはいつから始まった？
After graduating to the premier class in 2000, Rossi won the 500cc World Championship with Honda in 2001, the MotoGP World Championships (also with Honda) in 2002 and 2003 and continued his streak of back-to-back championships by winning the 2004 and 2005 titles after leaving Honda to join Yamaha. All of those titles were won in a dominant manner, being decided before the final round on all occasions. He lost the 2006 title with a crash in the final round at Valencia, ceding the title to his former Honda teammate Nicky Hayden. In 2007 Rossi and Yamaha were of no match to a dominant Casey Stoner on a Ducati, and Rossi ultimately finished a then career-low third overall.
2000