the most watched sport worldwide is soccer because soccer is EVERYWHERE on earth and the world cup every 4 years is watched EVERYWHERE so soccer is your answer
The Indianapolis 500 race car event.
The Indy 500 attracts around 400,000 spectators. The New York City Marathon is the largest single-day spectator event, attracting 2 million fans.
715.1 million individuals watched the final match of the FIFA 2006 World Cup on TV
Probably the Superbowl.
Apparently, the biggest sport in the United Kingdom is Football. However, it is not the same in all countries.
An Air Show is not a sport. Air racing may be considered a sport, but an Air Show is not.
The number one spectator sport is NASCAR .
It would be the Indianapolis 500, over 300,000 spectators in attendance for the event. Super Bowl
The Super Bowl
Nascar ran a series of races called the Grand National. It was a precursor of what is the largest spectator sport in the US today.
A prime example of what can trigger spectator aggression in sport is when a referee clearly takes the wrong action when it comes to foul play or rule-breaking. Another example is when spectators consume too much alcohol at a sports event that makes them boisterous and looking for a fight.