Giacomo Agostini 1967 he battled Hailwood in one of the most dramatic seasons in Grand Prix history. Each rider had 5 victories before the championship was decided in Agostini's favor at the last race of the season. Agostini dropped a bombshell on the Grand Prix world when he announced he would never again race at the Isle of Man TT, after the death of his close friend, Gilberto Parlotti during the 1972 TT. He considered the 37 mile circuit unsafe for world championship competition. At the time, the TT was the most prestigious race on the motorcycling calendar. Other top riders joined
Isle of Man TT World Championship. After the 1972 races, multiple world champion and dominant motorcycle racer of his time Giacomo Agostini announced he would never race again at the Isle of Man, declaring it too dangerous for international competition and that it was outrageous that such a race should never be part of a scenario where riders were forced to do such a race; at this point the Isle of Man TT was not suited to the growing professionalism and business aspects of Grand Prix motorcycle racing. More and more riders joined his boycott, and after 1976 the race was stricken from the