Claim: 1951 Syracuse Grand Prix (held in Syracuse, Sicily on 11 March 1951) had more than five drivers, one of whom is Luigi Villoresi.
Evidence: The 1951 Syracuse Grand Prix was a non-championship Formula One motor race held in Syracuse, Sicily on 11 March 1951. Italy Luigi Villoresi Italy Dorino Serafini Switzerland Rudi Fischer France Henri Louveau France Louis Rosier Italy Alberto Ascari Switzerland Pierre Staechelin Italy Nino Farina United_States Harry Schell Thailand Prince Bira Italy Ferdinando Righetti Italy Giovanni Bracco