Sport in Japan sport in the world. Sport in Japan Sports in Japan are a significant part of Japanese culture. Both traditional sports such as sumo and martial arts, and Western imports like baseball and association football, are popular with both participants and spectators. Sumo wrestling is considered Japan's national sport. Baseball was introduced to the country by visiting Americans in the 19th century. The Nippon Professional Baseball league is Japan's largest professional sports competition in terms of television ratings and spectators. Martial arts such as judo, karate and modern kendō are also widely practiced and enjoyed by spectators in the country. Association
Professional football (gridiron) USFL executive James F. "Jim" Foster began work on a brand new variant of football. Known as "arena football", the sport was played on a much shorter 50-yard field and was built heavily on a high-scoring offensive game. After two test games, he launched a professional league, the Arena Football League, in 1987. The AFL began its 24th season in 2011, and is currently the United States' second longest running professional football league ever, after the NFL. The AFL also had a minor league, AF2, which ran for 10 seasons, from 2000 to 2009. The Arena Football League season runs