A Grand Slam (also known as a Grand Chelem in French) is a rare achievement in Formula One where a driver fulfills the following criteria during a single race weekend:
The record for most Grand Slams is held by Jim Clark, with eight. Among active drivers, Lewis Hamilton has the most with six.
Notable world champions such as Alain Prost, Keke Rosberg, Jenson Button, and Kimi Räikkönen never achieved a single Grand Slam in their careers.
Both Ayrton Senna and Nelson Piquet earned their first Grand Slams in the same Grands Prix where they scored their first career victories. [2]