Unlike American pro teams, Japanese Baseball League teams were usually named after their corporate owners/sponsors rather than the cities or regions in which they played. This was because Japanese franchising does not have strong territorial requirements as in the Major Leagues; as a result, the JBL teams clustered in metropolitan areas in Japan's center and south. As a result, teams were notorious for how often they changed their names, often because of changes in ownership/sponsorship. Most Japanese Baseball League teams did not have an "official" home stadium; instead, teams played at any stadium in the area in which they were based. All league championships went to whoever had the best record at the end of the season, without a postseason series being played.
History
The league was established on February 5, 1936, as the Japan Occupational Baseball League, with an initial complement of seven teams. Three of the teams were based in Tokyo, two in Osaka, and two in Nagoya. The league played fall and spring seasons in 1937 and 1938, adding one new team each year. It was renamed the Japanese Baseball League in 1939, playing a 96-game schedule. Before the 1940 season, one of the founding teams, Nagoya Kinko, merged with the Tokyo Senators. The 1940 season featured a 104-game schedule. In October 1940, the league outlawed the use of English in Japanese baseball. In response, the Korakuen Eagles became "Kurowashi", the Osaka Tigers became "Hanshin", the Tokyo Senators became "Tsubasa", and Lion became "Asahi." In 1941, the JBL appointed its first president, Jiro Morioka. Morioka negotiated with the Japanese Imperial Army to keep professional baseball going through the early years of the Second World War. The league played a 90-game schedule in 1941, a 104-game schedule in 1942, and an 84-game schedule in 1943. Two Tokyo-based teams dissolved before the 1944 season: the Yamato Baseball Club and the Nishitetsu Baseball Club. Due to the Pacific War, the 1944 season was truncated to c. 35 games, and the 1945 season was skipped entirely. Many players enlisted in the Japanese Imperial Army. The league restarted on November 6, 1945, and a full season of 105 games was played the next year, with two new teams joining the league. One of the new teams, Gold Star, was owned by textile manufacturerKomajiro Tamura, who also owned Pacific. A rival four-team league, known as the Kokumin League, played a 30-game summer season in 1947. Unable to compete against the more established JBL, however, the Kokumin League disbanded a few games into the 1947 fall season. The Japanese Baseball League played a 119-game schedule in 1947. That year, baseball personality Sōtaro Suzuki proposed that JBL teams should have pet names like the Yomiuri Giants', whose pet name was "Kyojin", and names such as the Osaka Tigers' alias "Mouko", the revived Tokyo Senators' "Seito" and the Pacific's "Taihei" began to be used by the press. However, some teams rejected the use of these pet names, so they were never fully adopted. The 1948 season had a 140-game schedule, and the 1949 season had a 134-game schedule. After the 1949 season, the league reorganized into today's Nippon Professional Baseball. Four of the franchises formerly in the Japanese Baseball League currently play in NPB's Central League, and four others are in the Pacific League.
Foreign players
, an ethnic Russian pitcher, was a dominant player of the era and the first professional pitcher in Japan to win 300 games. Shosei Go, nicknamed "The Human Locomotive", was a speedy player from Taiwan who played in the league for the Kyojin and the Tigers. He won the 1943 JBL Most Valuable Player award as a member of the champion Kyojin. Hiroshi Oshita was another Taiwanese player who starred in the JBL. From 1946 to 1949 he played for the Tokyo Senators/Tokyu Flyers. Andrew "Bucky" Harris McGalliard, Herbert "Buster" North, and James E. "Jimmy Bonna" Bonner became the first Americans to play in Japan's professional baseball league in 1936. They were joined by the Japanese-American players Kiyomi "Slim" Hirakawa, Fumito "Jimmy" Horio, Kazuyoshi "George" Matsuura, Yoshio "Sam" Takahashi, and Tadashi "Bozo" Wakabayashi.