What do you think is the greatest sporting event/moment of all time? Things to consider: Spectacle, atmosphere, importance, influence or just a personal favourite! I'd have to say that... The 'Fight of The Century' - Ali vs Frazier at Madison Square Garden is was the greatest sporting event of all time. I don't think there's ever been such anticipation for a match, or so much personal rivalry between participants and the social aspects of the match really did divide the whole country.