List of Oakland Athletics minor league affiliates

The Oakland Athletics farm system consists of seven Minor League Baseball affiliates across the United States. All four teams are independently owned. Additionally, the Athletics operate complex based rookie level squads playing in the Arizona League and the Dominican Summer League.

The Athletics have been affiliated with the Double-A Midland RockHounds of the Texas League since 1999, making it the longest-running active affiliation in the organization among teams not owned by the Athletics.[1] Their newest affiliate is the Lansing Lugnuts of the Midwest League which became the Athletics' High Single-A club in 2021.[1] The longest affiliation in team history was the 30-year relationship with the then-Class A-Advanced California League's Modesto A's from 1975 to 2004.[1]

Geographically, Oakland's closest domestic affiliate is the Stockton Ports of the Low Single-A California League, which is approximately 51 miles (82 km) away. Their furthest domestic affiliate is the Lansing Lugnuts of the High Single-A Midwest League, which is approximately 2,331 miles (3,751 km) away.

2021–present

The current structure of Minor League Baseball is the result of an overall contraction of the system beginning with the 2021 season. Class A was reduced to two levels: High Single-A and Low Single-A.

Year Triple-A Double-A High Single-A Low Single-A Rookie League Foreign Rookie
2021 Las Vegas Aviators[2] Midland RockHounds[2] Lansing Lugnuts[2] Stockton Ports[2] Arizona League Athletics DSL Athletics

1990–2020

Minor League Baseball operated with six classes from 1990 to 2020. The Class A level was subdivided for a second time with the creation of Class A-Advanced. The Rookie level consisted of domestic and foreign circuits.[3]

Year Triple-A Double-A Class A-Advanced Class A Class A Short Season Rookie League Foreign Rookie
2020 Las Vegas Aviators[4] Midland RockHounds[5] Stockton Ports[6] Beloit Snappers[7] Vermont Lake Monsters[8] AZL Athletics Gold
AZL Athletics Green
DSL Athletics
2019 Las Vegas Aviators Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics Gold
AZL Athletics Green
DSL Athletics
2018 Nashville Sounds[9] Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2017 Nashville Sounds Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2016 Nashville Sounds Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2015 Nashville Sounds Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2014 Sacramento River Cats Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2013 Sacramento River Cats Midland RockHounds Stockton Ports Beloit Snappers Vermont Lake Monsters AZL Athletics DSL Athletics
2012 Sacramento River Cats Midland RockHounds Stockton Ports Burlington Bees Vermont Lake Monsters AZL Athletics DSL Athletics
2011 Sacramento River Cats Midland RockHounds Stockton Ports Burlington Bees Vermont Lake Monsters AZL Athletics DSL Athletics
2010 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics
2009 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics
2008 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2007 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2006 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2005 Sacramento River Cats Midland RockHounds Stockton Ports Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2004 Sacramento River Cats Midland RockHounds Modesto A's Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2003 Sacramento River Cats Midland RockHounds Modesto A's Kane County Cougars Vancouver Canadians AZL Athletics DSL Athletics 1 & 2
2002 Sacramento River Cats Midland RockHounds Modesto A's
Visalia Oaks
Vancouver Canadians AZL Athletics DSL Athletics East & West
2001 Sacramento River Cats Midland RockHounds Modesto A's
Visalia Oaks
Vancouver Canadians AZL Athletics DSL Athletics East & West
2000 Sacramento River Cats Midland RockHounds Modesto A's
Visalia Oaks
Vancouver Canadians AZL Athletics DSL Athletics East & West
1999 Vancouver Canadians Midland RockHounds Modesto A's
Visalia Oaks
Southern Oregon Timberjacks AZL Athletics DSL Athletics East & West
1998 Edmonton Trappers Huntsville Stars Modesto A's
Visalia Oaks
Southern Oregon Timberjacks AZL Athletics DSL Athletics East & West
1997 Edmonton Trappers Huntsville Stars Modesto A's
Visalia Oaks
Southern Oregon Timberjacks AZL Athletics DSL Athletics East & West
1996 Edmonton Trappers Huntsville Stars Modesto A's West Michigan Whitecaps Southern Oregon Timberjacks AZL Athletics DSL Athletics
1995 Edmonton Trappers Huntsville Stars Modesto A's West Michigan Whitecaps Southern Oregon A's AZL Athletics DSL Athletics
1994 Tacoma Tigers Huntsville Stars Modesto A's West Michigan Whitecaps Southern Oregon A's AZL Athletics DSL Athletics
1993 Tacoma Tigers Huntsville Stars Modesto A's Madison Muskies Southern Oregon A's AZL Athletics DSL Athletics
1992 Tacoma Tigers Huntsville Stars Modesto A's Madison Muskies Southern Oregon A's AZL Athletics DSL Athletics
1991 Tacoma Tigers Huntsville Stars Modesto A's Madison Muskies Southern Oregon A's AZL Athletics DSL Athletics
1990 Tacoma Tigers Huntsville Stars Modesto A's Madison Muskies Southern Oregon A's AZL Athletics DSL Athletics

1963–1989

The foundation of the minors' current structure was the result of a reorganization initiated by Major League Baseball (MLB) before the 1963 season. The reduction from six classes to four (Triple-A, Double-AA, Class A, and Rookie) was a response to the general decline of the minors throughout the 1950s and early-1960s when leagues and teams folded due to shrinking attendance caused by baseball fans' preference for staying at home to watch MLB games on television. The only change made within the next 27 years was Class A being subdivided for the first time to form Class A Short Season in 1966.[3]

Year Triple-A Double-A Class A Class A Short Season Rookie League
1989 Tacoma Tigers Huntsville Stars Modesto A's
Madison Muskies
Southern Oregon A's AZL Athletics
DSL Athletics
1988 Tacoma Tigers Huntsville Stars Modesto A's
Madison Muskies
Southern Oregon A's AZL Athletics
1987 Tacoma Tigers Huntsville Stars Modesto A's
Madison Muskies
Medford A's
1986 Tacoma Tigers Huntsville Stars Modesto A's
Madison Muskies
Medford A's
1985 Tacoma Tigers Huntsville Stars Modesto A's
Madison Muskies
Medford A's Pocatello Gems
1984 Tacoma Tigers Albany-Colonie A's Modesto A's
Madison Muskies
Medford A's Idaho Falls A's
1983 Tacoma Tigers Albany A's Modesto A's
Madison Muskies
Medford A's Idaho Falls A's
1982 Tacoma Tigers West Haven A's Modesto A's
Madison Muskies
Medford A's Idaho Falls A's
1981 Tacoma Tigers West Haven A's Modesto A's Medford A's
1980 Ogden A's West Haven Whitecaps Modesto A's Medford A's
1979 Ogden A's Waterbury A's Modesto A's Medford A's
1978 Vancouver Canadians Jersey City A's Modesto A's Bend Timber Hawks
1977 San Jose Missions Chattanooga Lookouts Modesto A's Medicine Hat A's
1976 Tucson Toros Chattanooga Lookouts Modesto A's Boise A's
1975 Tucson Toros Birmingham A's Modesto A's Boise A's
1974 Tucson Toros Birmingham A's Burlington Bees Lewiston Broncs
1973 Tucson Toros Birmingham A's Burlington Bees Lewiston Broncs
1972 Iowa Oaks Birmingham A's Burlington Bees Coos Bay-North Bend A's
1971 Iowa Oaks Birmingham A's Burlington Bees Coos Bay-North Bend A's
1970 Iowa Oaks Birmingham A's Burlington Bees Coos Bay-North Bend A's
1969 Iowa Oaks Birmingham A's Burlington Bees
Lodi Crushers
Tri-City A's
1968 Vancouver Mounties Birmingham A's Burlington Bees
Leesburg Athletics
Peninsula Grays
GCL Athletics
1967 Vancouver Mounties Birmingham A's Burlington Bees
Leesburg Athletics
Peninsula Grays
GCL Athletics
1966 Vancouver Mounties Mobile A's Burlington Bees
Leesburg Athletics
Modesto Reds
Lewiston Broncs
1965 Vancouver Mounties Birmingham Barons Lewiston Broncs
Burlington Bees
Leesburg Athletics
Shelby Rebels
1964 Dallas Rangers Birmingham Barons Lewiston Broncs
Daytona Beach Islanders
Burlington Bees
Wytheville A's
1963 Portland Beavers Binghamton Triplets Lewiston Broncs
Daytona Beach Islanders
Burlington Bees

1923–1962

The minors operated with six classes (Triple-A, Double-A, and Classes A, B, C, and D) from 1946 to 1962. The Pacific Coast League (PCL) was reclassified from Triple-A to Open in 1952 due to the possibility of becoming a third major league. This arrangement ended following the 1957 season when the relocation of the National League's Dodgers and Giants to the West Coast killed any chance of the PCL being promoted. The 1963 reorganization resulted in the Eastern and South Atlantic Leagues being elevated from Class A to Double-A, five of seven Class D circuits plus the ones in B and C upgraded to A, and the Appalachian League reclassified from D to Rookie.[3]

Year Triple-A Double-A Class A Class B Class C Class D
1962 Portland Beavers Albuquerque Dukes Binghamton Triplets Lewiston Broncs Minot Mallards Daytona Beach Islanders
1961 Hawaii Islanders Shreveport Sports Portsmouth-Norfolk Tides Lewiston Broncs Visalia A's Albuquerque Dukes
Sarasota Sun Sox
1960 Dallas-Fort Worth Rangers Shreveport Sports Sioux City Soos
Lewiston Broncs
Visalia A's Albuquerque Dukes
Sanford Greyhounds
1959 Portland Beavers Shreveport Sports Albany Senators Sioux City Soos Pocatello A's Grand Island A's
Plainview A's
Olean A's
1958 Buffalo Bisons Little Rock Travelers Albany Senators Rochester/Winona A's Pocatello A's Grand Island A's
Plainview A's
Selma Cloverleafs
1957 Buffalo Bisons Little Rock Travelers Columbia Gems Abilene Blue Sox Pocatello A's
Crowley Millers
Seminole Oilers
Grand Island A's
Mattoon Athletics
1956 Columbus Jets Columbia Gems Abilene Blue Sox Pocatello Bannocks
Crowley Millers
Seminole Oilers
Fitzgerald A's
Grand Island A's
1955 Columbus Jets Savannah Athletics Lancaster Red Roses
Hot Springs Bathers
Burlington A's Welch Miners/Marion A's
Seminole Oilers
1954 Ottawa Athletics Savannah Athletics Lancaster Red Roses Drummondville A's Hopkinsville Hoppers
Welch Miners
1953 Ottawa Athletics Savannah Indians
Williamsport A's
Fayetteville Highlanders St. Hyacinthe A's Cordele A's
Hopkinsville Hoppers
Welch Miners
1952 Ottawa Athletics Savannah Indians
Lincoln A's
Fayetteville A's
Harrisburg Senators
St. Hyacinthe A's Lexington Indians
Cordele A's
Corning A's
1951 Savannah Indians
Lincoln A's
Fayetteville A's
Salisbury A's
Rome Colonels Lexington Indians
Cordele A's
Corning A's
1950 Buffalo Bisons Savannah Indians
Lincoln A's
Fayetteville A's
Sunbury A's
West Palm Beach Indians
Youngstown A's Lexington A's
Red Springs Red Robins
Welch Miners
Portsmouth A's
Tarboro A's
Cordele A's
1949 Savannah Indians
Lincoln A's
Martinsville A's Kewanee A's
Youngstown A's
Lexington A's
Red Springs Red Robins
Welch Miners
Portsmouth A's
Moultrie A's
Tarboro A's
1948 Savannah Indians
Lincoln A's
Martinsville A's
Moline/Kewanee A's
Lexington A's
Federalsburg A's
Red Springs Red Robins
Welch Miners
Portsmouth A's
Moultrie A's
1947 Birmingham Barons Savannah Indians
Lincoln A's
Lancaster Red Roses Martinsville A's
Moline A's
Niagara Falls Frontiers
Lexington A's
Federalsburg A's
Nyack Rocklands
Red Springs Red Robins
Welch Miners
1946 Toronto Maple Leafs Savannah Indians Lancaster Red Roses Martinsville A's
Kingston Ponies
Lexington A's
Federalsburg A's
1945 Toronto Maple Leafs Lancaster Red Roses Martinsville A's Lexington A's
1944 Elmira Pioneers Lancaster Red Roses
1943 Elmira Pioneers Wilmington Blue Rocks
1942 Williamsport Grays Wilmington Blue Rocks Newport News Builders
1941 Toronto Maple Leafs Williamsport Grays Wilmington Blue Rocks Newport News Pilots Federalsburg A's
1940 Toronto Maple Leafs Williamsport Grays Wilmington Blue Rocks Federalsburg A's
1939 Williamsport Grays Federalsburg A's
Lexington Indians
Abbeville A's
1938 Williamsport Grays Federalsburg A's
Lexington Indians
1937 Williamsport Grays Federalsburg A's
1936 Williamsport Grays Richmond Colts Cleveland A's
1935 Williamsport Grays Richmond Colts
1934 Montreal Royals Williamsport Grays
1933 Montreal Royals Williamsport Grays
1932 Portland Beavers
1924 Shreveport Gassers
1923 Shreveport Gassers

References

  1. "Oakland Athletics Minor League Affiliates". Baseball-Reference.com. Retrieved July 27, 2017.
  2. Gallegos, Martin (December 9, 2020). "New club among A's Minor League invites". MLB. Retrieved December 9, 2020.
  3. Cronin, John (Spring 2013). "Truth in the Minor League Class Structure: The Case for the Reclassification of the Minors". The Baseball Research Journal. Society for American Baseball Research. Retrieved July 27, 2017.
  4. "A's Announce Partnership with Las Vegas 51s". Major League Baseball. September 17, 2018.
  5. Kevin, Reichard (September 25, 2018). "Affiliate Dance". Ballpark Digest. Retrieved September 25, 2018.
  6. Speddon, Zach (April 8, 2016). "Ports Extended PDC with A's". Ballpark Digest. Retrieved September 6, 2018.
  7. "Snappers And Athletics Extend PDC Through 2020". Beloit Snappers. Minor League Baseball. September 21, 2018. Retrieved September 21, 2018.
  8. "Lake Monsters, A's Extend PDC Through 2020". Ballpark Digest. August 9, 2018. Retrieved September 6, 2018.
  9. Reichard, Kevin (September 18, 2014). "Sounds, Athletics announce four-year PDC". Ballpark Digest. Retrieved September 6, 2018.
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