Have you ever wondered how the affiliations between major and minor league baseball teams work?

Major league teams sign two or four year agreements called Player Development Contracts (PDC) with minor league teams. These are renewed in even years, so after the even number year seasons, you will often see many minor league teams switch affiliations.

Important dates for the PDC renewal process:
September 12-15, 2008 - Window where a list of teams that are available is provided to clubs which have not renewed their affiliation.
September 16-30, 2008 - Teams can negotiate for new affiliates.
After that time, teams will be assigned affiliates if one has not yet been found.

This list indicates when the Player Development Contract for each minor league team is set to expire. If you have any information to help me out, I would appreciate if you sent me a message.

Page last updated 3/4/09. See the bottom of the page for a list of recent updates.

International League (AAA)
Buffalo Bisons - New York (NL) (signed through 2010)
Charlotte Knights - Chicago (AL) (signed through 2010)
Columbus Clippers - Cleveland (signed through 2012)
Durham Bulls - Tampa Bay (signed through 2010)
Gwinnett Braves - Atlanta (owned by Atlanta)
Indianapolis Indians - Pittsburgh (signed through 2012)
Lehigh Valley IronPigs - Philadelphia (signed through 2012)
Louisville Bats - Cincinnati (signed through 2012)
Norfolk Tides - Baltimore (signed through 2010)
Pawtucket Red Sox - Boston (signed through 2010)
Rochester Red Wings - Minnesota (signed through 2010)
Scranton/Wilkes-Barre Yankees - New York (AL) (signed through 2010)
Syracuse Chiefs - Washington (signed through 2010)
Toledo Mud Hens - Detroit (signed through 2012)

Pacific Coast League (AAA)
Albuquerque Isotopes - Los Angeles (signed through 2010)
Colorado Springs Sky Sox - Colorado (signed through 2010)
Fresno Grizzlies - San Francisco (signed through 2010)
Iowa Cubs - Chicago (NL) (signed through 2012)
Las Vegas 51s - Toronto (signed through 2010)
Memphis Redbirds - St. Louis (signed through 2012)
Nashville Sounds - Milwaukee (signed through 2010)
New Orleans Zephyrs - Florida (signed through 2010)
Oklahoma RedHawks - Texas (signed through 2010)
Omaha Royals - Kansas City (signed through 2010)
Portland Beavers - San Diego (signed through 2010)
Reno Aces - Arizona (signed through 2010)
Round Rock Express - Houston (signed through 2010)
Sacramento River Cats - Oakland (signed through 2010)
Salt Lake Bees - Anaheim (signed through 2012)
Tacoma Rainiers - Seattle (signed through 2010)

Eastern League (AA)
Akron Aeros - Cleveland (signed through 2012)
Altoona Curve - Pittsburgh (signed through 2010)
Binghamton Mets - New York (NL) (signed through 2010)
Bowie Baysox - Baltimore (signed through 2010)
Connecticut Defenders - San Francisco (signed through 2010)
Erie SeaWolves - Detroit (signed through 2010)
Harrisburg Senators - Washington (signed through 2010)
New Britain Rock Cats - Minnesota (signed through 2010)
New Hampshire Fisher Cats - Toronto (signed through 2012)
Portland Sea Dogs - Boston (signed through 2012)
Reading Phillies - Philadelphia (signed through 2010)
Trenton Thunder - New York (AL) (signed through 2014)

Southern League (AA)
Birmingham Barons - Chicago (AL) (signed through 2010)
Carolina Mudcats - Cincinnati (signed through 2010)
Chattanooga Lookouts - Los Angeles (signed through 2010)
Huntsville Stars - Milwaukee (signed through 2010)
Jacksonville Suns - Florida (signed through 2010)
Mississippi Braves - Atlanta (owned by Atlanta)
Mobile BayBears - Arizona (signed through 2010)
Montgomery Biscuits - Tampa Bay (signed through 2010)
Tennessee Smokies - Chicago (NL) (signed through 2012)
West Tennessee Diamond Jaxx - Seattle (signed through 2010)

Texas League (AA)
Arkansas Travelers - Anaheim (signed through 2010)
Corpus Christi Hooks - Houston (signed through 2012)
Frisco RoughRiders - Texas (owned by Texas)
Midland RockHounds - Oakland (signed through 2012)
Northwest Arkansas Naturals - Kansas City (signed through 2012)
San Antonio Missions - San Diego (signed through 2010)
Springfield Cardinals - St. Louis (owned by St. Louis)
Tulsa Drillers - Colorado (signed through 2010)

California League (A - Advanced)
Bakersfield Blaze - Texas (signed through 2010)
High Desert Mavericks - Seattle (signed through 2010)
Lake Elsinore Storm - San Diego (signed through 2012)
Lancaster JetHawks - Houston (signed through 2012)
Modesto Nuts - Colorado (signed through 2010)
Rancho Cucamonga Quakes - Anaheim (signed through 2010)
San Bernardino Inland Empire 66ers - Los Angeles (signed through 2010)
San Jose Giants - San Francisco (signed through 2010)
Stockton Ports - Oakland (signed through 2012)
Visalia Rawhide - Arizona (signed through 2010)

Carolina League (A - Advanced)
Frederick Keys - Baltimore (signed through 2010)
Kinston Indians - Cleveland (signed though 2010)
Lynchburg Hillcats - Pittsburgh (signed through 2010)
Myrtle Beach Pelicans - Atlanta (signed through 2010)
Potomac Nationals - Washington (signed through 2010)
Salem Red Sox - Boston (owned by Boston)
Wilmington Blue Rocks - Kansas City (signed through 2010)
Winston-Salem Dash - Chicago (AL) (signed through ?)

Florida State League (A - Advanced)
Brevard County Manatees - Milwaukee (signed through 2010)
Charlotte Stone Crabs - Tampa Bay (owned by Tampa Bay)
Clearwater Threshers - Philadelphia (owned by Philadelphia)
Daytona Cubs - Chicago (NL) (signed through 2012)
Dunedin Blue Jays - Toronto (owned by Toronto)
Fort Myers Miracle - Minnesota (signed through 2012)
Jupiter Hammerheads - Florida (owned by Florida)
Lakeland Flying Tigers - Detroit (owned by Detroit)
Palm Beach Cardinals - St. Louis (owned by St. Louis)
St. Lucie Mets - New York (NL) (owned by New York (NL))
Sarasota Reds - Cincinnati (owned by Cincinnati)
Tampa Yankees - New York (AL) (owned by New York (AL))

Midwest League (A)
Beloit Snappers - Minnesota (signed through 2010)
Burlington Bees - Kansas City (signed through 2010)
Cedar Rapids Kernels - Anaheim (signed through 2010)
Clinton Lumber Kings - Seattle (signed through 2010)
Dayton Dragons - Cincinnati (signed through 2012)
Fort Wayne TinCaps - San Diego (signed through 2010)
Great Lakes Loons - Los Angeles (signed though 2010)
Kane County Cougars - Oakland (signed through 2010)
Lansing Lugnuts - Toronto (signed through 2010)
Peoria Chiefs - Chicago (NL) (signed through 2012)
Quad Cities River Bandits - St. Louis (signed through 2010)
South Bend Silver Hawks - Arizona (signed through 2012)
West Michigan Whitecaps - Detroit (signed through 2014)
Wisconsin Timber Rattlers - Milwaukee (signed through 2012)

South Atlantic League (A)
Asheville Tourists - Colorado (signed through 2012)
Augusta GreenJackets - San Francisco (signed through 2010)
Bowling Green Hot Rods - Tampa Bay (signed through 2010)
Charleston Riverdogs - New York (AL) (signed through 2012)
Delmarva Shorebirds - Baltimore (signed through 2010)
Greensboro Grasshoppers - Florida (signed through 2010)
Greenville Drive - Boston (signed through 2012)
Hagerstown Suns - Washington (signed through 2010)
Hickory Crawdads - Texas (signed through 2010)
Kannapolis Intimidators - Chicago (AL) (signed through 2010)
Lake County Captains - Cleveland (signed through 2010)
Lakewood Blue Claws - Philadelphia (signed through 2010)
Lexington Legends - Houston (signed through 2012)
Rome Braves - Atlanta (owned by Atlanta)
Savannah Sand Gnats - New York (NL) (signed through 2010)
West Virginia Power - Pittsburgh (signed through 2010)

NY-Penn League (A - Short Season)
Aberdeen IronBirds - Baltimore (signed through 2010)
Auburn Doubledays - Toronto (signed through 2010)
Batavia Muckdogs - St. Louis (signed through 2010)
Brooklyn Cyclones - New York (NL) (owned by New York (NL))
Hudson Valley Renegades - Tampa Bay (signed through 2010)
Jamestown Jammers - Florida (signed through 2010)
Lowell Spinners - Boston (signed through 2010)
Mahoning Valley Scrappers - Cleveland (signed through 2010)
Oneonta Tigers - Detroit (signed through 2010)
State College Spikes - Pittsburgh (signed through 2010)
Staten Island Yankees - New York (AL) (owned by New York (AL))
Tri-City ValleyCats - Houston (signed through 2010)
Vermont Lake Monsters - Washington (signed through 2010)
Williamsport Crosscutters - Philadelphia (signed through 2010)

Northwest League (A - Short Season)
Boise Hawks - Chicago (NL) (signed through 2012)
Eugene Emeralds - San Diego (signed through 2012)
Everett AquaSox - Seattle (signed through 2010)
Salem-Keizer Volcanoes - San Francisco (signed through 2008)
Spokane Indians - Texas (signed through 2010)
Tri-City Dust Devils - Colorado (signed through 2010)
Vancouver Canadians - Oakland (signed through 2010)
Yakima Bears - Arizona (signed through 2010)

Appalachian League (Rookie - Short Season)
Bluefield Orioles - Baltimore (owned by Baltimore)
Bristol White Sox - Chicago (AL) (owned by Chicago (AL))
Burlington Royals - Kansas City (signed through 2010)
Danville Braves - Atlanta (owned by Atlanta)
Elizabethton Twins - Minnesota (owned by Minnesota)
Greeneville Astros - Houston (owned by Houston)
Johnson City Cardinals - St. Louis (owned by St. Louis)
Kingsport Mets - New York (NL) (owned by New York (NL))
Princeton Devil Rays - Tampa Bay (owned by Tampa Bay)
Pulaski Mariners - Seattle (signed through 2010)

Pioneer League (Rookie - Short Season)
Billings Mustangs - Cincinnati (signed through 2012)
Casper Ghosts - Colorado (signed through 2010)
Great Falls Voyagers - Chicago (AL) (signed through 2010)
Helena Brewers - Milwaukee (signed through 2010)
Idaho Falls Chukars - Kansas City (signed through 2010)
Missoula Osprey - Arizona (signed through 2010)
Ogden Raptors - Los Angeles (signed through 2010)
Orem Owlz - Anaheim (signed through 2012)

Send me a comment.

Recent Changes (the date is when I made the update, not necessarily when the change occurred):

3/4/09 - Detroit with Toledo to 2012
1/23/09 - Louisville with Cincinnati to 2012
11/29/08 - Jamestown with Florida to 2010
10/24/08 - Billings with Cincinnati to 2012
10/16/08 - Corpus Christi with Houston to 2012
10/4/08 - Idaho Falls with Kansas City to 2010
9/25/08 - Carolina with Cincinnati to 2010
9/25/08 - Connecticut with San Francisco to 2010
9/24/08 - Winston-Salem with Chicago (AL)
9/24/08 - High Desert with Seattle to 2010
9/24/08 - San Jose with San Francisco to 2010
9/23/08 - Trenton with New York (AL) to 2014
9/22/08 - Hickory with Texas to 2010
9/22/08 - Wisconsin with Milwaukee to 2012
9/22/08 - Clinton with Seattle to 2010
9/22/08 - Lancaster with Houston to 2012
9/22/08 - San Bernardino (Inland Empire) with Los Angeles to 2010
9/21/08 - Las Vegas with Toronto to 2010
9/21/08 - New Orleans with Florida to 2010
9/21/08 - Buffalo with New York (NL) to 2010
9/20/08 - Syracuse with Washington to 2010
9/19/08 - Salem with Boston to 2010
9/18/08 - Columbus with Cleveland to 2012
9/18/08 - Chattanooga with Los Angeles to 2010
9/18/08 - Jacksonville with Florida to 2010
9/18/08 - Albuquerque with Los Angeles to 2010
9/18/08 - Lynchburg with Pittsburgh to 2010
9/17/08 - Helena with Milwaukee to 2010
9/17/08 - Huntsville with Milwaukee to 2010
9/17/08 - West Virginia with Pittsburgh to 2010
9/17/08 - Hagerstown with Washington to 2010
9/17/08 - Vermont with Washington to 2010
9/17/08 - Savannah with New York (NL) to 2010
9/17/08 - Casper with Colorado to 2010
9/12/08 - Fort Myers with Minnesota to 2012
9/11/08 - Memphis with St. Louis to 2012
9/10/08 - Tacoma with Seattle to 2010
9/10/08 - Everett with Seattle to 2010
9/10/08 - Pulaski with Seattle to 2010
9/10/08 - Batavia with St. Louis to 2010
9/8/08 - West Tennessee with Seattle to 2010
9/8/08 - Spokane with Texas to 2010
9/8/08 - Hudson Valley with Tampa Bay to 2010
9/6/08 - Tri-City (NWL) with Colorado to 2010
9/6/08 - Tri-City (NYPL) with Houston to 2010
9/4/08 - San Antonio with San Diego to 2010
9/4/08 - West Michigan with Detroit to 2014
9/4/08 - Mahoning Valley with Cleveland to 2010
8/30/08 - Columbus/Bowling Green with Tampa Bay to 2010
8/29/08 - Omaha with Kansas City to 2010
8/29/08 - Portland with San Diego to 2010
8/28/08 - Lake Elsinore with San Diego to 2012
8/27/08 - Visalia with Arizona to 2010
8/25/08 - New Britain with Minnesota to 2010
8/25/08 - Charleston with New York (AL) to 2012
8/25/08 - South Bend with Arizona to 2012
8/25/08 - Great Lakes with Los Angeles to 2010
8/25/08 - Eugene with San Diego to 2012
8/23/08 - Kane County with Oakland to 2010
8/23/08 - Lexington with Houston to 2012
8/21/08 - Arkansas with Anaheim to 2010
8/15/08 - Augusta with San Francisco to 2010
8/15/08 - Asheville with Colorado to 2012
8/12/08 - Ft Wayne with San Diego to 2010
8/12/08 - Northwest Arkansas with Kansas City to 2012
7/24/08 - Stockton with Oakland to 2012
7/16/08 - Williamsport with Philadelphia to 2010
7/16/08 - Lakewood with Philadelphia to 2010
7/16/08 - Yakima with Arizona to 2010
7/11/08 - Wilmington with Kansas City to 2010
7/8/08 - Dayton with Cincinnati to 2012
6/30/08 - Mobile with Arizona to 2010
6/26/08 - Beloit with Minnesota to 2010
6/26/08 - Modesto with Colorado to 2010
6/24/08 - Akron with Cleveland to 2012
6/19/08 - Lehigh Valley with Philadelphia to 2012
6/19/08 - Reading with Philadelphia to 2010
6/18/08 - Lowell with Boston to 2010
6/18/08 - Greensboro with Florida to 2010
6/5/08 - Kinston with Cleveland to 2010
4/25/08 - Rochester with Minnesota to 2010
4/16/08 - Durham with Tampa Bay to 2010
4/16/08 - Binghamton with New York (NL) to 2010
4/12/08 - Myrtle Beach with Atlanta to 2010
4/10/08 - Indianapolis with Pittsburgh to 2012
3/28/08 - Fresno with San Francisco to 2010
3/14/08 - Montgomery with Tampa Bay to 2010
3/13/08 - Colorado Springs with Colorado to 2010
2/27/08 - Tucson with Arizona to 2010
2/14/08 - Corpus Christi with Houston to 2010
2/14/08 - Round Rock with Houston to 2010
2/9/08 - Greenville with Boston to 2012
2/6/08 - Quad Cities with St. Louis to 2010
2/5/08 - Rancho Cucamonga with Anaheim to 2010
1/24/08 - Auburn with Toronto to 2010
1/24/08 - Lansing with Toronto to 2010
1/24/08 - New Hampshire with Toronto to 2012
1/17/08 - Erie with Detroit to 2010
12/30/07 - Billings with Cincinnati to 2010
12/30/07 - Kannapolis with Chicago (AL) to 2010
12/21/07 - Pulaski with Seattle to 2008
12/19/07 - Burlington with Kansas City to 2010
12/17/07 - Vancouver with Oakland to 2010
12/17/07 - Lansing with Toronto to 2010
12/14/07 - Boise with Chicago (NL) to 2012
12/14/07 - Peoria with Chicago (NL) to 2012
12/14/07 - Daytona with Chicago (NL) to 2012
12/14/07 - Tennessee with Chicago (NL) to 2012
12/14/07 - Iowa with Chicago (NL) to 2012
12/14/07 - Orem with Anaheim to 2012
12/6/07 - Cedar Rapids with Anaheim to 2010
11/13/07 - Great Falls with White Sox to 2010
10/25/07 - Scranton/Wilkes-Barre with Yankees to 2010
7/3/07 - Portland with Boston to 2012
6/15/07 - Midland with Oakland to 2012
1/31/07 - Toledo with Detroit to 2010
12/19/06 - Louisville with Cincinnati to 2010
10/18/06 - High Desert with Seattle to 2008
10/6/06 - Clinton with Texas to 2008
10/5/06 - Idaho Falls with Kansas City to 2008
10/3/06 - Delmarva with Baltimore to 2010
10/3/06 - Frederick with Baltimore to 2010
10/3/06 - Bowie with Baltimore to 2010
9/30/06 - Tucson with Arizona to 2008
9/30/06 - Columbus with Tampa Bay to 2008
9/30/06 - Tacoma with Seattle to 2008
9/29/06 - Lancaster with Boston to 2008
9/29/06 - Visalia with Arizona to 2008
9/29/06 - San Bernardino with Los Angeles to 2008
9/29/06 - Mobile with Arizona to 2008
9/29/06 - Vero Beach with Tampa Bay
9/28/06 - West Tennessee with Seattle to 2008
9/28/06 - Great Lakes with Los Angeles to 2008
9/28/06 - Vermont with Washington to 2008
9/28/06 - West Virginia with Milwaukee to 2008
9/28/06 - San Antonio with San Diego to 2008
9/28/06 - Ottawa with Philadelphia to 2008
9/28/06 - Savannah with New York (NL) to 2008
9/28/06 - Batavia with St. Louis to 2008
9/28/06 - Williamsport with Philadelphia to 2008
9/25/06 - State College with Pittsburgh to 2010
9/25/06 - Norfolk with Baltimore to 2010
9/21/06 - New Orleans with Mets to 2008
9/21/06 - Myrtle Beach with Atlanta to 2008
9/21/06 - Tennessee with Cubs to 2008
9/21/06 - Scranton/Wilkes-Barre with Yankees to 2008
9/20/06 - Columbus with Washington to 2008
9/20/06 - Wilmington with Kansas City to 2008
9/20/06 - Hagerstown with Washington to 2008
9/19/06 - Potomac with Washington to 2010
9/15/06 - Pulaski no longer with Toronto
9/15/06 - South Bend with Arizona to 2008
9/14/06 - Missoula with Arizona to 2010
9/12/06 - Sacramento with Oakland to 2010
9/12/06 - Lake County with Cleveland to 2010
9/12/06 - Mahoning Valley with Cleveland to 2008
9/9/06 - Hickory with Pittsburgh to 2008
9/9/06 - Lakewood with Philadelphia to 2008
9/9/06 - Midland with Oakland to 2008
9/9/06 - Ogden with Los Angeles to 2010
9/9/06 - Burlington with Kansas City to 2010
9/9/06 - Wichita with Kansas City to 2008
9/9/06 - Ashevile with Colorado to 2008
9/9/06 - Dayton with Cincinnati to 2008
9/9/06 - Iowa with Chicago (NL) to 2010
9/9/06 - Lowell with Boston to 2008
9/9/06 - Pawtucket with Boston to 2010
9/9/06 - Yakima with Arizona to 2008
9/9/06 - Winston-Salem with Chicago (AL) to 2008
9/9/06 - Charlotte with Chicago (AL) to 2010
9/6/06 - Montgomery with Tampa Bay to 2008
9/6/06 - Jacksonville with Los Angeles to 2008
9/6/06 - Las Vegas with Los Angeles to 2008
9/2/06 - Helena with Milwaukee to 2008
9/2/06 - Brevard County with Milwaukee to 2010
9/2/06 - Huntsville with Milwaukee to 2008
9/1/06 - Burlington with Kansas City
9/1/06 - Spokane with Texas to 2008
9/1/06 - Salem-Keizer with San Francisco to 2008
9/1/06 - Connecticut with San Francisco to 2008
9/1/06 - Fresno with San Francisco to 2008
8/31/06 - Portland with San Diego to 2008
8/31/06 - Frisco with Texas to 2010
8/31/06 - Omaha with Kansas City to 2008
8/27/06 - Chattanooga with Cincinnati to 2008
8/25/06 - Oklahoma with Texas to 2010
8/25/06 - Bakersfield with Texas to 2010
8/24/06 - Casper with Colorado to 2008
8/22/06 - Modesto with Colorado to 2008
8/21/06 - Tri-City (NWL) with Colorado to 2008
8/12/06 - Albuquerque with Florida to 2008 1