Lazzarini began his Grand Prix career in 1969 in the 250 class on a Benelli. He won his first Grand Prix at the 1973 Dutch TT on a Maico.
Lazzarini embarked on his Grand Prix racing journey in 1969, competing in the 250 class on a Benelli motorcycle. His breakthrough came in 1973 when he claimed his inaugural Grand Prix triumph at the Dutch TT event, piloting a Maico machine.