40/30/20/10 years ago
Buddy Lazier wins a lacklustre Indy 500 in an IRL field lacking in depth. Alex Zampedri is fourth, despite breaking his legs in a last-lap accident.
Pole man Alain Prost leads home McLaren team-mate Keke Rosberg to earn himself a hat-trick of Monaco GP wins. Lotus’s Ayrton Senna is third.
Reigning World Champion Niki Lauda dominates the Belgian GP, leading home Clay Regazzoni for a Ferrari 1-2. Jacques Laffite is a distant third with his Ligier-Matra JS5.
Willy Mairesse and Herbert Müller win the Targa Florio aboard their factory Porsche Carrera 6. Jean Guichet and Giancarlo Baghetti are second in a Ferrari Dino 206.