The first Formula One World Championship season took place in 1950, and the Ferrari team made its World Championship debut at Monte Carlo with Ascari, Villoresi and the famous French driver Raymond Sommer on the team. The team had a mixed year – their supercharged Tipo 125 was too slow to challenge the dominant Alfa Romeo team so instead Ferrari began working on an unblown 4.5l car. Much of the year was lost as the team's 2-litre Formula Two engine was progressively enlarged, though when the full 4.5l Tipo 375 arrived for the Gran Premio d'Italia (the final round of the championship) Ascari gave Alfa Romeo their sternest challenge of the year before retiring; he then took over teammate Dorino Serafini's car to finish second. The new Ferrari then won the non-championship Gran Premio do Penya Rhin.