Kammala jumla mai zuwa: Gianclaudio Giuseppe "Clay" Regazzoni (5 ga Satumba 1939 <unk> 15 ga Disamba 2006) ya kasance direba mai tsere na Switzerland. Ya yi gasa a tseren Formula One daga 1970 zuwa 1980, ya lashe Grands Prix biyar. Gasarsa ta farko ita ce
Gasar Italiya a Monza a kakar wasan farko, yana tuka Ferrari. Ya kasance tare da kungiyar Italiya har zuwa. Bayan kakar wasa daya tare da BRM, Regazzoni ya koma Ferrari na tsawon shekaru uku, zuwa. Bayan ƙarshe barin Ferrari a ƙarshen 1976, Regazzoni ya shiga ƙungiyoyin Ensign da Shadow, kafin ya koma Williams a cikin 1976, inda ya ɗauki nasarar farko ta Grand Prix na farko na ƙungiyar Burtaniya, Babban Prix na Burtaniya a 1979 a Silverstone.