Kammala wannan jumla: A 1967, Parkes ya yi gasa a wasu manyan kyaututtuka biyu na Ferrari wanda ya gama na biyar a
Zandvoort amma ya yi ritaya ta hanyar hadari a Spa, bayan ya zame a kan man da aka fesa daga Jackie Stewart's H16 BRM, a zagaye na farko, yana fama da karyewar kafafu wanda zai kawo karshen aikinsa na Grand Prix.