Ayrton Senna has been voted the Formula 1 Champion of Champions.
The full statistics from the Champion of Champions series.
Cast your vote for the greatest F1 champion of all time.
Cast your vote in the second Champion of Champions semi-final.
Two drivers who, between them, won one in six of all F1 championship races.
Ayrton Senna and Jack Brabham both won three championships but had very different careers.
Juan Manuel Fangio and Jackie Stewart are the third pairing in the Champion of Champions quarter-finals.
There was only half a point between them in 1984, but which was the best champion?
By the end of this season Schumacher will have started four times as many races as Clark.
Jack Brabham and Lewis Hamilton both won the championship in their second full F1 seasons.