LONDON   - Nine-time world champion Valentino Rossi on Tuesday slammed MotoGP as "boring" and called for a change to the sport. "Now is the worst moment in MotoGP since I joined in 2000," Rossi told BBC Sport. "It is the most boring moment. Races are quite bad and it is very difficult to stay awake." Spaniards Jorge Lorenzo and Dani Pedrosa have dominated this year's championship, winning 12 out of the 16 races so far between them.