He won the 1957 FIM 125cc World Championship riding for the Italian Mondial factory.
At Parkfield Corner on lap 1, Luigi Taveri riding for MV Agusta led the Mondial of Sammy Miller, while Tarquinio Provini riding for Mondial and Carlo Ubbiali on a MV Agusta were in the mid-field chasing pack.
Honda had managed to salvage some honour by securing the team prize, but even their fastest rider Naomi Taniguchi had finished nearly four minutes behind the rider in front and almost eight minutes down on the race winner, Tarquinio Provini.