The Central League was founded in 1949 with eight teams: four holdovers from the previous Japanese Baseball League — the Chunichi Dragons, the Hanshin Tigers, the Yomiuri Giants, and the Shochiku Robins (formerly the Taiyō Robins) — and four new teams — the Hiroshima Carp, the Kokutetsu Swallows, the Nishi Nippon Pirates, and the Taiyō Whales.
The Nishi Nippon Pirates existed for one season — they placed sixth in 1950, and the following season merged with the also Fukuoka-based Nishitetsu Clippers (a member of the Pacific League) to form the Nishitetsu Lions, who joined the Pacific League. This brought the number of Central League teams down to an ungainly arrangement of seven.
Ryuji Suzuki became president of the Central League in 1952.[1]
In 1952, it was decided that any team ending the season with a winning percentage below .300 would be disbanded or merged with other teams. The Shochiku Robins fell into this category, and were merged with the Taiyō Whales to become the Taiyō Shochiku Robins in January 1953. This enabled the Central League to shrink to an even number of six teams.
Ryuji Suzuki retired as CL president in 1984 after 33 years at the post.[1]
In 2007, a new Climax Series was introduced. This playoff series was inspired by the stepladder playoff used in the Pacific League introduced in 2004 for the top three teams of the league to determine which one progressed to the Japan Series. Under the previous system, there was no post-season playoff and the winner of the pennant automatically qualified for the Japan Series.
