The second most popular sport would be baseball. Although it is second for most popular SEEN, it is first for the most PLAYED sport.
The NFL and College Football are really popular sports watched in the USA. Football is the most popular spectator sport in the US.
No, but it is the most played sport (or popular) in the world.
Yes, it is the most popular sport in the US. But I would say that American Football, Baseball and Basketball are very close in popularity in the US. Football (soccer) is the most popular female sport in America, as well.
It depends on what sport. NFL is the most popular sport and the three most popular teams are Packers, Patriots, and Falcons.