Sir Jackie Stewart on F1's 'great contributor' Sid Watkins

Three-time world champion Sir Jackie Stewart pays tribute to the "greatest contributor to Formula 1" Professor Sid Watkins, who has died aged 84.

Watkins was at the forefront of F1 safety for more than 30 years, and as trackside doctor he played a major role in saving the lives of several grand prix drivers after heavy crashes.

Stewart says Watkins was "greatly loved by the whole community", and without his commitment to safety in the sport "we would have lost many more drivers".

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