Intercity baseball tournament
The intercity baseball tournament of Japan, commonly known as "Summer All-star or Mid-Summer Classic", is an annual nationwide industrial baseball tournament in Japan, organized by JABA and Mainichi Shimbun and sponsored by the Japanese Ministry of Internal Affairs and Communications by the grounds that "regional development is promoted through tournaments between teams that represent their cities."
The tournament is considered very traditional in Japanese baseball, since it predates the Professional Baseball and it is a way to reinforce the traditional regional sport rivalities existing across Japan, unlike the Industrial National Championship Tournament, the teams must represent the name of their town and use the flag or the seal/symbol of their cities in the right sholder of uniforms.
The winners are awarded the "Black Lion Flag", runners-up are awarded the "White Lion Flag".
Winners
A bracket after city and team in champion column indicates number of titles.links to Japanese Wikipedia article except club team and team does not have an article.