I say Ayrton Senna in the same way I would say Ronnie O ' Sullivan in Snooker . In other words the record books will for the foreseeable future say the best were Schumacher in F1 and Stephen Hendry in Snooker , but for pure talent both Senna ( and Ronnie in Snooker ) are for me the best ever in their sports because of being utter geniuses . One offs that the likes of will never grace their sports again . For me , Senna's drive on a wet Donington in slicks is the greatest drive in F1 history .