Prost thought he had won the title, but Senna recovered and won the race, only to be excluded
1989 - JAPANESE GRAND PRIX
" As far as I am concerned I was the winner in Japan in 1988 and 1989. The facts, the circumstances and the decisions of those moments don't count for me anymore. "
Ayrton Senna
1989 title could have gone to the wire in Adelaide if Suzuka decision had been reversed