Futbol, aka Soccer
soccer! is the number one sport in the world
Biking
The number one spectator sport is NASCAR .
It is an internationally practiced activity. The Korean forms have been adapted to sport to the point that they have participated in the Olympics for the last couple of rounds. And there are some kata competitions that are internationally attended.
Football (soccer) is by far the world's number one sport.
It appears that soccer is the most viewed internationally
NFL
The most popular sport in Spain is soccer. Spain compeats internationally in both soccer and sailing.
Its classed as a developing sport. The game is growing internationally.
Association football or soccer is the number one sport that every player participates.
hockey
soccer