Pedzisa mutsara unotevera: PC1 yakaita kutanga kwayo pa1974 Canadian Grand Prix naDonohue achikwikwidza 24th uye kupedza 12th. Donohue akarega kumhanya kwake naPenske pamakwikwi emumba akazotevera
1974 United States Grand Prix yakaitwa paWatkins Glen mushure mokunge vakwanisa 14th, vakakundikana kupedzisa nhangemutange nekuda kwekukanganisa kumashure.