the most popular sport in Japan is baseball :)
Yes, it is one of the most popular sports in Japan.
Yes, it was the second most popular sport in the world when it was introduced in Japan
Baseball is a very popular sport in Japan
yes, not baseball.
The second most popular spectator sport is marathons, then ekiden which is a long distance relay race.
because kids love it
yes, the National sport is different than the most popular sport. While the popularity may change over the year the national sport most-likely never changes
The most common sports in Japan include association football and other ball sports. Some of the martial arts and Karate are also practiced by many people. There is no legally official sport of Japan, but the Japan Sumo Association describes sumo as the national sport of Japan, with baseball as the most popular spectator sport of the country.