California State League

There were at least three class D California State Leagues in operation at some point in minor league baseball history. Two lasted just a single season (1910 and 1929) and the other lasted a whole three seasons 1913 through 1915.

The 1910 version was actually class B until June 6, when it became class D. Sacramento and San Francisco dropped out May 31, and Oakland moved to Merced on June 7, which might explain the drop in classification. Then Fresno disbanded June 24, causing the league to cease operations the same day.

The league made it through the 1913 season then disbanded June 1, 1914. When it was re-tried in 1915, the league disbanded May 30, due to heavy rains, with the teams having played only 5 to 7 games.

The 1929 version, which was based in Southern California unlike the previous two versions, lasted until June 17, with teams having played about 50 games.

1910 California State League
President: Frank Herman

#San Francisco and Sacramento disbanded May 31.
##Oakland (24–19) moved to Merced June 7.
###Fresno disbanded June 24 and the league ceased operations the same day.
The league was a class B until June 6, when it became a class D league.

Player Statistics

1913 California State League
President: Allan T. Baum

#Vallejo (24–33) moved to Watsonville July 6.

Player Statistics

1914 California State League
President: Allan T. Baum

The league disbanded June 1. Player Statistics

1915 California State League
President: Louis W. Schroeder, Jr.

Berkeley (0–2) moved to San Francisco April 28.
The league disbanded May 30 due to heavy rains.
No player statistics available.

1929 California State League
President: Orville McPherson

#Santa Ana (4–20) moved to Pomona May 8, which played six games at San Bernardino.
Pomona (2-4) moved to Coronado County May 15, playing their games at the San Diego ball park.
The league disbanded June 17.

Player Statistics

The Encyclopedia of Minor League Baseball: Second Edition.

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Wikipedia