Football (soccer) is more popular than any other sport in the universe. It is a very simplistic game that doesn't require expensive equipment. It is played everywhere in the world and is accessible to very poor parts of the world. read more
Hockey has never been as popular as the Big Three, but one could make the argument it's more popular than ever in the US. Still, it's not part of American culture the way football and baseball are, and it's not easy to change that. read more