Sumo is the national sport of Japan and is almost 2000 years old. It's not only the oldest of Japanís various martial arts, it also evolved into the most distinct and ritualistic. We've selected some pictures of Sumo Wrestling worldwide. A sumo wrestler walks under cherry blossoms in full bloom on his way to a bout for the 'Honozumo', an exhibition sumo tournament at the Yasukuni Shrine precincts, in Tokyo, Japan. "Yokozuna", or sumo grand champion, Hakuho from Mongolia (facing) throws compatriot Kakuryu to the dirt during their playoff bout at the Spring Grand Sumo tournament in Osaka.