|1906||Alameda, Oakland Commuters, Presidio Soldiers, Sacramento Cordovas, San Jose Prune Pickers, Stockton Millers|
|1905||Fresno, Lodi, Presidio, San Francisco, San Jose, Stockton|
|1903||Oakland Heeseman, Oakland Reliance, Petaluma, San Francisco, San Jose, Stockton|
|1886||Oakland Greenhood & Morans, San Francisco Californias, San Francisco Damianas, San Francisco Knickerbockers, Stockton|
|1885||Oakland, Sacramento Union, San Francisco, San Francisco Occidental, San Jose Athletics|
|1883||Marysville, Napa, Sacramento, San Francisco Woonsocket|
|1929||D||Bakersfield Bees, San Bernardino Padres, San Diego Aces, Santa Ana/Pomona/Coronado Orange Countians/Arabs|
|1915||D||Alameda, Berkeley/San Francisco, Modesto Reds, Oakland Commuters, San Jose Bears, Stockton Millers|
|1914||D||Fresno Tigers, Modesto Reds, San Jose Bears, Stockton Millers|
|1913||D||Fresno Packers, San Jose Bears, Stockton Producers, Vallejo Marines/Watsonville Pippins|
|1910||D||Fresno Tigers, Oakland Invaders/Merced Fig Growers, Sacramento Baby Senators, San Francisco Baby Seals, San Jose Prune Pickers, Stockton Millers|
|1904||Ind||Lodi, Oakland, Sacramento, San Francisco, San Jose, Stockton|
Historical performance data for professional leagues (affiliated minor leagues, independent minor leagues, fall/winter leagues, and other international leagues) is provided by and licensed from 24-7 Baseball and Chadwick Baseball Bureau. It incorporates the work of many stalwart baseball researchers, including Cliff Blau, Art Cantu, Frank Hamilton, Reed Howard, Kevin Johnson, Bob McConnell, Jack Morris, and Ray Nemec, as well as members of the Minor Leagues Committee of the Society for American Baseball Research.
Perhaps most importantly, it builds upon the seminal work of Ed Washuta, who magnanimously provided the framework to make the whole thing possible.