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

• Fresno, CA: Fresno Tigers
• Oakland, CA: Oakland Invaders
  Oakland Invaders
  Oakland Invaders was a professional American football team that played in the United States Football League from 1983 through 1985.-In reaction to the Raiders relocating to Los Angeles:...
  
  
  • Merced, CA: Merced Fig Growers
• Sacramento, CA: Sacramento Baby Senators
• San Francisco, CA: San Francisco Baby Seals
• San Jose, CA: San Jose Prune Pickers
• Stockton, CA: Stockton Millers

1910

1910 California State League

President: Frank Herman

Team Standings	W	L	PCT	GB	Managers
Stockton Millers	33	19	.635	0	Jimmy McCall
Fresno Tigers ###	32	21	.604	1.5	Ed McDonough Ed McDonough Edward Sebastian "Ed" McDonough was a catcher in Major League Baseball. He attended Notre Dame, and played his first major league game on August 3, 1909 with the Philadelphia Phillies.- Biography :...
Oakland Oakland Invaders Oakland Invaders was a professional American football team that played in the United States Football League from 1983 through 1985.-In reaction to the Raiders relocating to Los Angeles:...  / Merced  ##	25	25	.500	7	Cy Mooreing
San Jose Prune Pickers	22	30	.423	11	Willis Browne
Sacramento Baby Senators #	16	23	.410	NA	Charles Doyle Charles Doyle Charles Doyle may refer to:* Charles Hastings Doyle , British soldier and Lieutenant Governor of Nova Scotia and New Brunswick* Charles Altamont Doyle , artist...
San Francisco Baby Seals #	14	24	.368	NA	Tommy Sheehan Tommy Sheehan Thomas H. Sheehan was a third baseman in Major League Baseball from 1900-1908.-External links:...

#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>

Player	Team	Stat	Tot		Player	Team	Stat	Tot
Ed McDonough Ed McDonough Edward Sebastian "Ed" McDonough was a catcher in Major League Baseball. He attended Notre Dame, and played his first major league game on August 3, 1909 with the Philadelphia Phillies.- Biography :...	Fresno	BA	.349		Oscar Jones Oscar Jones Oscar Lafayette Jones , was a former professional baseball pitcher in the Major Leagues from 1903-1905 for the Brooklyn Superbas.-External links:...	Fresno	W	16
Gene Kratzberg	Stockton	Pct	.733; 11-4

1913-1915

• Alameda, CA: Alameda
  Alameda
  Alameda is a Spanish word that means "A place full of poplars", and may refer to:-Colleges and universities:* College of Alameda, a two-year community college located in Alameda, California, in the United States-Music:...
  
   1915
• Berkeley, CA: Berkeley
  Berkeley
  -United Kingdom:* Berkeley, Gloucestershire** Berkeley Castle**Berkeley * Berkeley Square, London* Berkeley Square, Bristol-United States of America:*Berkeley, California, a city in the San Francisco Bay Area...
  
   1915
• Fresno, CA: Fresno Packers 1913; Fresno Tigers 1914
• Modesto, CA: Modesto Reds 1914-1915
• Oakland, CA: Oakland Commuters 1915
• San Francisco, CA: San Francisco 1915
• San Jose, CA: San Jose Bears 1913-1915
• Stockton, CA: Stockton Producers 1913; Stockton Millers 1914-1915
• Vallejo, CA: Vallejo Marines 1913
• Watsonville, CA: Watsonville Pippins 1913

1913-1915

1913 California State League

President: Allan T. Baum

Team Standings	W	L	PCT	GB	Managers
Stockton Producers	79	44	.642	0	Blaine Thomas Blaine Thomas Blaine M. "Baldy" Thomas was a starting pitcher in Major League Baseball who played briefly for the Boston Red Sox during the 1911 season. Listed at 5' 10", 165 lb., Thomas batted and threw right-handed...
Fresno Packers	73	50	.593	6	George Wheeler George Wheeler Captain George Montague Wheeler was a pioneering explorer and cartographer, leader of the Wheeler Survey, one of the major surveys of the western United States in the late nineteenth century...
Vallejo / Watsonville #	52	71	.423	27	Bill Devereaux
San Jose Bears	42	81	.341	37	Judge Nagle Judge Nagle Walter Harold Nagle [Lucky] was a pitcher in Major League Baseball who played for the Pittsburgh Pirates and Boston Red Sox during the season. Listed at 6' 0", 176 lb., Nagle batted and threw right-handed...

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

Player Statistics>

Player	Team	Stat	Tot		Player	Team	Stat	Tot
Happy Smith Happy Smith Henry Joseph Smith , was a Major League Baseball outfielder.Smith was born in Coquille, Oregon. He played one season for the Brooklyn Superbas in . He died in San Jose, California.-External links:...	San Jose	BA	.323		Nelson Jones	Stockton	W	24
Tom Pierce	Fresno	Runs	87		Ashley Pope	Stockton	SO	235
Joe Wilhoit Joe Wilhoit Joseph William Wilhoit was an outfielder in Major League Baseball, playing mainly as a right fielder from through for the Boston Braves , Pittsburgh Pirates , New York Giants , and Boston Red Sox . Listed at 6'2", 175 lb., Wilhoit batted left-handed and threw right-handed...	Stockton	Hits	158		Nelson Jones	Stockton	Pct	.750; 24-8
Rinaldo Williams Rinaldo Williams Rinaldo Louis Williams played third base for four games in Major League Baseball in 1914, for the Brooklyn Tip-Tops of the Federal League.-Sources:...	Vallejo/Watson	HR	7

1914 California State League

President: Allan T. Baum

Team Standings	W	L	PCT	GB	Managers
Fresno Tigers	20	15	.571	0	George Wheeler George Wheeler Captain George Montague Wheeler was a pioneering explorer and cartographer, leader of the Wheeler Survey, one of the major surveys of the western United States in the late nineteenth century...
San Jose Bears	20	16	.556	.5	Mike Steffani
Stockton Millers	17	19	.472	3.5	George Harper
Modesto Reds	14	21	.400	6	Jim Byrnes

The league disbanded June 1. Player Statistics>

Player	Team	Stat	Tot		Player	Team	Stat	Tot
Tony Boeckel Tony Boeckel Norman Doxie "Tony" Boeckel was a former Major League Baseball infielder who played six seasons with the Pittsburgh Pirates and the Boston Braves of the National League. He was born in Los Angeles, California....	Stockton	BA	.364		Horace Miller	Fresno	W	9
Tony Boeckel Tony Boeckel Norman Doxie "Tony" Boeckel was a former Major League Baseball infielder who played six seasons with the Pittsburgh Pirates and the Boston Braves of the National League. He was born in Los Angeles, California....	Stockton	Runs	25		Walt Waldschmidt	Fresno	SO	75
Tony Boeckel Tony Boeckel Norman Doxie "Tony" Boeckel was a former Major League Baseball infielder who played six seasons with the Pittsburgh Pirates and the Boston Braves of the National League. He was born in Los Angeles, California....	Stockton	Hits	51		Harry Stewart Harry Stewart Harry Stewart was an American comedian and singer, who often performed as Yogi Yorgesson, a comically exaggerated Swede....	San Jose	Pct	1.000; 8-0
Tom Pierce	Fresno	HR	2

1915 California State League

President: Louis W. Schroeder, Jr.

Team Standings	W	L	PCT	GB	Managers
Modesto Reds	6	1	.857	0	Jack Lesher
San Jose Bears	4	1	.800	1	Mike Steffani
Oakland Commuters	2	3	.400	3	Walt McMemony
Alameda Alameda Alameda is a Spanish word that means "A place full of poplars", and may refer to:-Colleges and universities:* College of Alameda, a two-year community college located in Alameda, California, in the United States-Music:...	2	3	.400	3	Billy Hammond
Stockton Millers	2	4	.333	3.5	Buck Franks
Berkeley Berkeley -United Kingdom:* Berkeley, Gloucestershire** Berkeley Castle**Berkeley * Berkeley Square, London* Berkeley Square, Bristol-United States of America:*Berkeley, California, a city in the San Francisco Bay Area...  / San Francisco #	1	5	.167	4.5	C.W. Brainard / Joe Solari

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

1929

• Bakersfield, CA: Bakersfield Bees
• Santa Ana, CA: Santa Ana Orange Countians
  • Pomona, CA: Pomona Arabs
    • Coronado, CA: Coronado Arabs
• San Bernardino, CA: San Bernardino Padres
• San Diego, CA: San Diego Aces

1929

1929 California State League

President: Orville McPherson

Team Standings	W	L	PCT	GB	Managers
San Diego Aces	34	25	.576	0	Sam Agnew Sam Agnew Samuel Lester Agnew was a catcher in Major League Baseball. From 1913 through 1919, he played for the St. Louis Browns , Boston Red Sox and Washington Senators . Agnew batted and threw right-handed. He was born in Farmington, Missouri.Agnew debuted with the St. Louis Browns on April 10,...
Bakersfield Bees	32	28	.533	2.5	Louis Guisto Lou Guisto Louis Joseph Guisto was a Major League Baseball first baseman who played for five seasons. He played for the Cleveland Indians from 1916 to 1917 and from 1921 to 1923....  / Ned Porter Ned Porter Ned Porter was an Irish sportsperson. He played hurling with his local club Brian Dillons and was a member of the Cork senior inter-county team in the 1930s and 1940s. Porter won one All-Ireland title, one Munster title and one National Hurling League title with Cork.-Teams:...
San Bernardino Padres	32	29	.525	3	Rube Ellis Rube Ellis George William "Rube" Ellis , was a professional baseball player who played outfielder in the Major Leagues from -. He would play for the St. Louis Cardinals.-External links:...
Santa Ana / Pomona / Coronado #	22	38	.367	12.5	Jess Orndorf / Pinch Thomas Pinch Thomas Chester David Thomas was a backup catcher in Major League Baseball who played from 1912 through 1921 for the Boston Red Sox and Cleveland Indians . Listed at 5' 9.5", 173 lb., Thomas batted left-handed and threw right-handed...

#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>

Player	Team	Stat	Tot		Player	Team	Stat	Tot
Lou Martin Lou Martin Louis 'Lou' Martin Louis 'Lou' Martin Louis 'Lou' Martin (born 12 August 1949, Belfast, Northern Ireland is a piano and organ player, who is most famous for his work with the London-based band Killing Floor and fellow Irish musician Rory Gallagher....	Bakersfield	BA	.389		George Caster George Caster George Jasper Caster nicknamed "Ug," was a right-handed pitcher in Major League Baseball with the Philadelphia Athletics , St. Louis Browns , and Detroit Tigers . Born in Colton, California, Ug appeared in 376 major league games and compiled a record of 76-100 in 1377-2/3 innings pitched...	San Bernardino	W	12
Ned Porter Ned Porter Ned Porter was an Irish sportsperson. He played hurling with his local club Brian Dillons and was a member of the Cork senior inter-county team in the 1930s and 1940s. Porter won one All-Ireland title, one Munster title and one National Hurling League title with Cork.-Teams:...	Bakersfield	Runs	63		George Caster George Caster George Jasper Caster nicknamed "Ug," was a right-handed pitcher in Major League Baseball with the Philadelphia Athletics , St. Louis Browns , and Detroit Tigers . Born in Colton, California, Ug appeared in 376 major league games and compiled a record of 76-100 in 1377-2/3 innings pitched...	San Bernardino	SO	80
L.B. Tomlinson	Bakersfield	Hits	83		George Caster George Caster George Jasper Caster nicknamed "Ug," was a right-handed pitcher in Major League Baseball with the Philadelphia Athletics , St. Louis Browns , and Detroit Tigers . Born in Colton, California, Ug appeared in 376 major league games and compiled a record of 76-100 in 1377-2/3 innings pitched...	San Bernardino	Pct	.706; 12-5
Ned Porter Ned Porter Ned Porter was an Irish sportsperson. He played hurling with his local club Brian Dillons and was a member of the Cork senior inter-county team in the 1930s and 1940s. Porter won one All-Ireland title, one Munster title and one National Hurling League title with Cork.-Teams:...	Bakersfield	HR	15