Minor League Baseball (MiLB) is a hierarchy of professional baseball minor leagues in the Americas that compete at levels below Major League Baseball (MLB) and help prepare players to join major league teams. Those teams that are affiliated with MLB teams operate under the Commissioner of Baseball within the scope of organized baseball. Several leagues, known as independent baseball leagues, consist of teams with no affiliation to MLB teams.
Starting with the 2021 season, the number of MLB-affiliated minor leagues with teams in the United States and Canada has been reduced to 11, with a total of 120 teams (four per each of the 30 MLB franchises, excluding rookie league teams). There is also an MLB-affiliated rookie league in the Dominican Republic.
Leagues
Defunct
All MiLB Teams
Active teams
| Major League Club
|
League
|
Affiliate
|
City
|
Current Home Venue
|
| Arizona Diamondbacks
|
Pacific Coast League
|
Reno Aces
|
Reno, Nevada
|
Greater Nevada Field (2009-present)
|
| Atlanta Braves
|
International League
|
Gwinnett Stripers
|
Lawrenceville, Georgia
|
Coolray Field (2009-present)
|
| Baltimore Orioles
|
Eastern League
|
Bowie Baysox
|
Bowie, Maryland
|
Prince George's Stadium (1994-present)
|
| South Atlantic League
|
Aberdeen IronBirds
|
Aberdeen, Maryland
|
Leidos Field at Ripken Stadium (2002-present)
|
| Boston Red Sox
|
International League
|
Worcester Red Sox
|
Worcester, Massachusetts
|
Polar Park (2021-present)
|
| Chicago Cubs
|
International League
|
Iowa Cubs
|
Des Moines, Iowa
|
Principal Park (1992-present)
|
| Northwest League
|
Eugene Emeralds
|
Eugene, Oregon
|
PK Park (2010-present)
|
| Chicago White Sox
|
International League
|
Charlotte Knights
|
Charlotte, North Carolina
|
Truist Field (2014-present)
|
| Southern League
|
Birmingham Barons
|
Birmingham, Alabama
|
Regions Field (2013-present)
|
| Cincinnati Reds
|
International League
|
Louisville Bats
|
Louisville, Kentucky
|
Louisville Slugger Field (2000-present)
|
| Cleveland Guardians
|
International League
|
Columbus Clippers
|
Columbus, Ohio
|
Huntington Park
|
| Eastern League
|
Akron RubberDucks
|
Akron, Ohio
|
Canal Park (1997-present)
|
| Colorado Rockies
|
Pacific Coast League
|
Albuquerque Isotopes
|
Albuquerque, New Mexico
|
Rio Grande Credit Union Field at Isotopes Park (2003-present)
|
| California League
|
Fresno Grizzlies
|
Fresno, California
|
Chukchansi Park (2002-present)
|
| Houston Astros
|
Pacific Coast League
|
Sugar Land Space Cowboys
|
Sugar Land, Texas
|
Constellation Field (2012-present)
|
| Texas League
|
Corpus Christi Hooks
|
Corpus Christi, Texas
|
Whataburger Field (2005-present)
|
| Kansas City Royals
|
International League
|
Omaha Storm Chasers
|
Papillion, Nebraska
|
Werner Park (2011-present)
|
| Milwaukee Brewers
|
International League
|
Nashville Sounds
|
Nashville, Tennessee
|
First Horizon Park (2015-present)
|
| Southern League
|
Biloxi Shuckers
|
Biloxi, Mississippi
|
MGM Park (2015-present)
|
| Midwest League
|
Wisconsin Timber Rattlers
|
Grand Chute, Wisconsin
|
Neuroscience Group Field at Fox Cities Stadium (1995-present)
|
| New York Mets
|
International League
|
Syracuse Mets
|
Syracuse, New York
|
NBT Bank Stadium (1997-present)
|
| New York Yankees
|
Eastern League
|
Somerset Patriots
|
Bridgewater Township, New Jersey
|
TD Bank Ballpark (1999-present)
|
| Philadelphia Phillies
|
International League
|
Lehigh Valley IronPigs
|
Allentown, Pennsylvania
|
Coca-Cola Park (2008-present)
|
| Florida State League
|
Clearwater Threshers
|
Clearwater, Florida
|
BayCare Ballpark (2004-present)
|
| Pittsburgh Pirates
|
International League
|
Indianapolis Indians
|
Indianapolis, Indiana
|
Victory Field (1996-present)
|
| Florida State League
|
Bradenton Marauders
|
Bradenton, Florida
|
LECOM Park (2010-present)
|
| San Diego Padres
|
Texas League
|
San Antonio Missions
|
San Antonio, Texas
|
Nelson W. Wolff Municipal Stadium (1994-present)
|
| Seattle Mariners
|
Pacific Coast League
|
Tacoma Rainiers
|
Tacoma, Washington
|
Cheney Stadium (1960-present)
|
| Texas League
|
Arkansas Travelers
|
North Little Rock, Arkansas
|
Dickey-Stephens Park (2007-present)
|
| Tampa Bay Rays
|
International League
|
Durham Bulls
|
Durham, North Carolina
|
Durham Bulls Athletic Park (1995-present)
|
| Texas Rangers
|
Pacific Coast League
|
Round Rock Express
|
Round Rock, Texas
|
Dell Diamond (2000-present)
|
| Northwest League
|
Spokane Indians
|
Spokane Valley, Washington
|
Avista Stadium (1958-present)
|
| Toronto Blue Jays
|
International League
|
Buffalo Bisons
|
Buffalo, New York
|
Sahlen Field (1988-present)
|
| Eastern League
|
New Hampshire Fisher Cats
|
Manchester, New Hampshire
|
Northeast Delta Dental Stadium (2005-present)
|
| Washington Nationals
|
International League
|
Rochester Red Wings
|
Rochester, New York
|
Frontier Field (1997-present)
|
| South Atlantic League
|
Wilmington Blue Rocks
|
Wilmington, Delaware
|
Daniel S. Frawley Stadium (1993-present)
|
Defunct teams
See also
Leagues Portal
