Since the contraction of Minor-League baseball to 120 teams, we’ve compiled a list of Minor-League affiliates.
Most teams have started making their announcements about their affiliations. That list may not be final but here is a list and I have updated it with the teams that we know. The teams are listed by Divisions and in Alphabetical order.
*indicates the team was in Independent baseball
|MLB Team||AAA||AA||High A||Low A|
|Toronto Blue Jays||Buffalo Bisons||New Hampshire Fisher Cats||Vancouver Canadians||Dunedin Blue Jays|
|Baltimore Orioles||Norfolk Tides||Bowie Baysox||Aberdeen Ironbirds||Delmarva Shorebirds|
|Tampa Bay Rays||Durham Bulls||Montgomery Biscuits||Bowling Green Hot Rods||Charleston Riverdogs|
|Boston Red Sox||Worcester Red Sox||Portland Seadogs||Greenville Drive||Salem Red Sox|
|New York Yankees||Scranton Wilkes-Barre RailRaiders||Somerset Patriots*||Hudson Valley Renegades||Staten Island Yankees|
|Cleveland Indians||Columbus Clippers||Akron Rubberducks||Lake County Captains||Lynchburg Hillcats|
|Kansas City Royals||Omaha Storm Chasers||Northwest Arkansas Naturals||Quad Cities River Bandits||Columbia Fireflies|
|Detroit Tigers||Toledo Mud Hens||Erie SeaWolves||West Michigan Whitecaps||Lakeland FFlying Tigers|
|Minnesota Twins||St. Paul Saints||Wichita Wind Surge||Cedar Rapids Kernels||Fort Myers|
|Chicago White Sox||Charlotte Knights||Birmingham Barons||Winston-Salem Dash||Kannapolis Cannon Ballers|
|Los Angeles Angels||Salt Lake Bees||Rocket City Trash Pandas||Tri-City Dust Devils||Inland Empire 66ers|
|Houston Astros||Sugar Land Skeeters*||Corpus Christi Hooks||Ashville Tourists||Fayetteville Woodpeckers|
|Oakland Athletics||Las Vegas Aviators||Midland RockHounds||Lansing Lugnuts||Stockton Ports|
|Texas Rangers||Round Rock Express||Frisco RoughRiders||Hickory Crawdads||Down East Wood Ducks|
|Atlanta Braves||Gwinnett Stripers||Mississippi Braves||Rome Braves||Augusta GreenJackets|
|Miami Marlins||Jacksonville Jumbo Shrimp||Pensacola Blue Wahoos||Beloit Snappers||Jupiter Hammerheads|
|New York Mets||Syracuse Mets||Binghamton Rumble Ponies||Brooklyn Cyclones||St. Lucie Mets|
|Washington Nationals||Rochester Red Wings||Harrisburg Senators||Wilmington Blue Rocks||Fredericksburg Nationals|
|Philadelphia Phillies||Lehigh Valley IronPigs||Reading Fightin Phils||Jersey Shore BlueClaws||Clearwater Threshers|
|Milwaukee Brewers||Nashville Sounds||Biloxi Shuckers||Wisconsin Timber Rattlers||Carolina Mudcats|
|St Louis Cardinals||Memphis Redbirds||Springfield Cardinals||Peoria Chiefs||Palm Beach Cardinals|
|Chicago Cubs||Iowa Cubs||Tennessee Smokies||South Bend Cubs||Myrtle Beach Pelicans|
|Pittsburgh Pirates||Indianapolis Indians||Altoona Curve||Greensboro Grasshoppers||Bradenton Marauders|
|Cincinnati Reds||Louisville Bats||Chattanooga Lookouts||Dayton Dragons||Daytona Tortugas|
|Arizona Diamondbacks||Reno Aces||Amarillo Sod Poodles||Hillsboro Hops||Visalia Rawhide|
|Los Angeles Dodgers||Oklahoma City Dodgers||Tulsa Drillers||Great Lakes Loons||Rancho Cucamonga Quakes|
|San Francisco Giants||Sacramento River Cats||Richmond Flying Squirrels||Eugene Emeralds||San Jose Giants|
|San Diego Padres||El Paso Chihuahuas||San Antonio Missions||Fort Wayne TinCaps||Lake Elsinore Storm|
|Colorado Rockies||Albuquerque Isotopes||Hartford Yard Goats||Spokane Indians||Fresno Grizzlies|
Some of these affiliations are the same. Some have gone to Independent Leagues, some have gone from Independent Leagues to affiliated ball and others like the Staten Island Yankees have folded and are suing their former parent clubs.
Notable for Texas: The Round Rock Express will become their new Triple-A affiliate. The Down East Wood Ducks and Hickory Crawdads are switching leagues.
The Nashville Sounds become the Milwaukee Brewers new Triple-A affiliate. The San Antonio Missions were their previous affiliate and are now with the Padres as their Double-A affiliate.
The Amarillo Sod Poodles first year in 2019, they were affiliated with the San Diego Padres. They are now an affiliate of the Arizona Diamondbacks.
The San Antonio Missions were the Triple-A team for the Milwaukee Brewers.
The Fresno Grizzlies will move from Triple-A to Low-A, which is a significant drop.
The teams have until February 10, 2021 to decide whether they will accept the offers or not.
This is the list of Minor-League affiliates and will be updated.