1974 : VICE-WORLD CHAMPION 500cc MV AGUSTA 2 GRAND PRIX WINS
1975 : 3rd WORLD CHAMPIONSHIP 350cc YAMAHA 1 GRAND PRIX WIN
2 TIMES WORLD CHAMPION 250cc : 1983 - 1986 YAMAHA 19 GRAND PRIX WINS
1981 : WORLD CHAMPION 500cc SUZUKI6 GRAND PRIX WINS 1987 : 1st DAYTONA “BATTLE OF THE TWINS” DUCATI 1988 : 2 SBK WINS DUCATI
1993 : WORLD CHAMPION 500cc SUZUKI 25 GRAND PRIX WINS
1985 : 4th WORLD CHAMPIONSHIP 250cc YAMAHA 3 GRAND PRIX WINS 1987 : 1st SUZUKA 8 HOURS + Kevin MAGEE YAMAHA
