soccer
the fifa world cup
It is the biggest sporting event.
Cricket.
The Kentucky Derby
the olympics
the european champions league
The London 2012 Paralympics
Olympics, College, High School Athletics!
French open
No, the Super Bowl is the most watched sporting event in the United States. The most watch sporting event in the world would be the World Cup (soccer).
The All-Ireland Football Final, which is the single largest sporting event in Ireland.
The Olympics involve every country, so people from every country tune in to watch whatever sporting event they are interested in. E.g. 100m Sprint, Archery.
What is the world's largest single day sporting event? The answer is the Indianapolis 500.