Yes, it is one of the most popular sports in Japan.
wrestling
Baseball
yes its actually very popular
Baseball.
cycling is very big in France and japan
yes, not baseball.
Baseball or Yakyu as they call it there.
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.
Baseball is very popular sport, but they also play other sports like soccer.