Portuguese GP: Nelson Piquet, Lotus 100T Honda, leads Michele Alboreto, Ferrari F1/87-88C, Riccardo Patrese, Williams FW12 Judd, Thierry Boutsen, Benetton B188 Ford, Derek Warwick, Arrows A10B Megatron, and Andrea de Cesaris, Rial ARC-01 Ford.
Nelson Piquet, Lotus 100T Honda, leads Michele Alboreto, Ferrari F1/87-88C, Riccardo Patrese, Williams FW12 Judd, Thierry Boutsen, Benetton B188 Ford, Derek Warwick, Arrows A10B Megatron, and Andrea de Cesaris, Rial ARC-01 Ford.