1974: American ace Peter Revson was killed during pre-season testing for Shadow ay Kyalami in South Africa. The 35-year-old won the British and Canadian GPs for McLaren the previous season and had also secured the Can-Am title for the British squad in 1971.
1987: The inaugural World Touring Car Championship race took place at Monza, with widespread disqualifications causing confusion. The winning BMW M3 of Johnny Cecotto and Riccardo Patrese and the six similar M3s behind it were all thrown out for bodywork homologation issues, meaning the seventh-placed Holden Commodore of Allan Moffat and John Harvey was declared the winner.
1992: Nigel Mansell beat Williams team-mate Riccardo Patrese to win what would prove to be the final Mexican Grand Prix for 23 years. Benetton driver Michael Schumacher took his maiden F1 podium that day, the first of a record 155 appearances in the top three.