During 1984, both McLarens failed to finish a race only on two occasions in Belgium and Dallas, while recording four 1-2 finishes in South Africa, Germany, Holland and Portugal. McLaren wrapped up the Constructors' title in Round 13 with their 1-2 at Zandvoort, while the Drivers' title became a two horse race following the next race in Italy as the mathematical chance that Lotus-Renault driver Elio de Angelis had to upset the McLaren's evaporated as Lauda won and de Angelis suffered gearbox failure on lap 14. The race at Monza was also Prost's shortest of the year, ending after just three laps with a blown TAG engine.