Yamaha Wins Three World Championships | Video
Yamaha Grand Slam
Click video to see Yamaha earned 3 World Championship road-racing titles in just one day. On October 25th, 2009: Valentino Rossi won the MotoGP Championship, Ben Spies won the World Superbike Championship and Cal Crutchlow won the World Supersport Championship. This is an amazing accomplishment by Yamaha.