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Professor Sid Watkins with Ayrton Senna, driver of the #1 Honda Marlboro McLaren McLaren MP4/7A Honda RA121E/B V12 during the Belgian Grand Prix on 30 August 1992 at the Circuit de Spa-Francorchamps in Spa Francorchamps, Belgium. (Photo by Rainer W. Schlegelmilch/Getty Images)

Professor Sid Watkins with Ayrton Senna, driver of the #1 Honda Marlboro McLaren McLaren MP4/7A Honda RA121E/B  V12 during the Belgian Grand Prix on 30 August 1992 at the Circuit de Spa-Francorchamps in Spa Francorchamps, Belgium. (Photo by Rainer W. Schlegelmilch/Getty Images)