Prost began his career with McLaren (being run by Teddy Mayer) in 1980 alongside Ulsterman John Watson. On his debut in Buenos Aires, Argentina, he finished in sixth place, earning one point, something achieved by only a handful of drivers. Prost added four more points to his tally during the season, scoring points at Interlagos, Brands Hatch and Zandvoort. Prost finished the year 15th in the Drivers' Championship, equalling points with former world champion Emerson Fittipaldi. Despite the encouraging debut season, Prost had several accidents, breaking his wrist during practice at Kyalami and suffering a concussion during practice at Watkins Glen. He also retired from the Canadian round in Montreal a week earlier because of rear suspension failure. At the end of the season, despite having two years remaining on his contract, he left McLaren and signed with Renault. Prost has said that he left because of the large number of breakages on the car and because he felt the team blamed him for some of the accidents.