In addition to his Formula One appearance, Cordts had been successful in Canadian and U.S. sports car racing, particularly with various McLarens run by Dave Billes's Performance Engineering.
Ademais da súa aparición na Fórmula Un, Cordts tivo éxito nas carreiras canadenses e estadounidenses de automóbiles deportivos, particularmente con varios McLaren do equipo Performance Engineering de Dave Billes.