Kiyoshi Oshikawa

The tour had a strong influence on Oshikawa; because of the cost, they only visited minor league cities on the west coast.

[5] In 1920 Oshikawa, with two former Waseda classmates, founded the first professional baseball team in Japan, the Nihon Athletic Association (NAA, 日本運動協会).

His goals were the development of baseball in Japan, dispel negative attitudes toward the game,[7] and to ensure, through athletic competition, "that the spirit of cooperation and unity, fairness, and cheerful spirit required by the present age will be planted in the human heart."

It was incorporated as a "joint-stock organization" with limited and general partners (including Oshikawa) with a capital of 90,000 yen.

The first priority of the NAA was building a stadium, using the American professional baseball model which he had learned in 1905.

It became a supply depot for food and equipment to deal with the earthquake's destruction, and no baseball was played again at the stadium.

All professional baseball in Japan ceased during the depression years of 1929–1934,[6] revived by media mogul Matsutarō Shōriki in late 1934 with an All-star team.

[11] Oshikawa was in the same dormitory at Waseda Junior High as Mitsuyo Maeda, one of the first MMA artists of the modern era and studied with him at the Kodokan Judo Institute.