Portuguese GP, Estoril, October 21 1984
"The race of my life is very easy to choose. It was the last race in 1984 in Portugal, when I won the championship by half a point from my team-mate Alain Prost. I think this was the most difficult race for me.
"At the end of 1983 Prost lost his drive with Renault - nobody expected that. John Watson still hadn't signed his contract with [McLaren boss] Ron [Dennis], and suddenly I ended up with that little Frenchman as my team-mate."