Formula One World Championship
Pole sitter Nelson Piquet (BRA) Brabham BT53 leads eventual race winner Alain Prost (FRA) McLaren MP4/2, Ayrton Senna (BRA) Toleman TG184 and Keke Rosberg (FIN) Williams FW09B.
Portuguese Grand Prix, Rd16, Estoril, Portugal, 21 October 1984.