I would say basketball or football
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 Super Bowl
the world cup
715.1 million individuals watched the final match of the FIFA 2006 World Cup on TV
The most watched TV show was the MASH finale.The most viewed one-off event was Super Bowl XLIII.
Formula 1 Racing over 500 million viewers in 2010.
According to wikipedia, the sporting event with the largest TV audience worldwide is the FIFA World Cup, followed by the Summer Olympics. The Super Bowl is the biggest TV event period in the United States.
im guessing billions worldwide, its the most famous impactful event in tv history, almost everyone on the planet know the event
the first television broadcast in US in 1926