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
Formula TT 1972 TT, his close friend and the reigning world champion Giacomo Agostini, announced that he would never again race on the Isle of Man. More riders joined Agostini's boycott and by the 1976 season, only a handful of serious Grand Prix riders were among the entrants. Shortly after the 1976 TT, the FIM made the long-anticipated announcement that the TT, once the most prestigious race on the Grand Prix calendar, was stripped of its world championship status. The Grand Prix action was moved to the UK with the 1977 British Grand Prix being held at Silverstone. The race authorities of