Much as I'd like to say the likes of Ali, I shall stick to people who've been doing it in my lifetime... Robbie Fowler, most natural goal scorer of a generation, desperately unlucky with injuries. Ayrton Senna, when F1 was worth watching. Nigel Benn, just loved watching him fight, he'd rather get knocked out than take a backward step! Shane Warne, rock and roll bowling. Andre Agassi, proper tennis player beating all the big serving boring guys.