In what terms do you want to look at it Money? fans? player? ...
Football is Americas biggest sport it has over taken Baseball
No, the most watched sport in America is surprisingly NASCAR...
About 75% of the NASCAR fans are in America. NASCAR is an auto racing sport that is popular in many countries. Japan is one of the largest countries other than the United States that watches NASCAR regularly.
NFL without a doubt. NASCAR was once the fastest growing sport in America, but has since tapered off. New rules in NASCAR have caused them to lose some of their fan base.
"Nascar is committed to making the sport - on and off the racetrack - look like America. No other issue is more important to Nascar's success and growth."
According to ESPN, FOX and NBC, NASCAR is a sport.
The excitement, the speed, personalities, and of course the wrecks.
The number one spectator sport is NASCAR .
Super Bowl Sunday is the biggest annual sportingevent held in the United States.If you are talking annual fan attendance it is NASCAR by a wide margin.