Italian motor manufacturer Alfa Romeo has participated many times in Formula One. It currently participates as Alfa Romeo Racing Orlen while being operated by Sauber Motorsport AG. The brand has competed in motor racing as both a constructor and engine supplier sporadically between 1950 and 1987, and later as a commercial partner since 2015. The company's works drivers won the first two World Drivers' Championships in the pre-war Alfetta: Nino Farina in 1950; and Juan Manuel Fangio in 1951. Following these successes Alfa Romeo withdrew from Formula One.