He also competed in three F2 races for Surtees, but his main racing activities outside F1 were in the World Sportscar Championship, in which he drove for the works Ferrari team.
Tamén competiu en tres carreiras de F2 con Surtees, pero as súas principais actividades de carreiras fóra da F1 estaban no Campionato Mundial de Sportscar, na que pilotou para o equipo de fábrica de Ferrari.