Double-A, also known as Class AA, is the second-highest level of play in Minor League Baseball (MiLB), below Triple-A.
Double-A baseball was established in 1912, with three leagues being designated as Class AA. These leagues were previously designated as Class A, the highest level then.
In 1946, the three leagues were moved to the newly established Class AAA (Triple-A), and Class A1 became Double-A with two leagues: the Southern Association and the Texas League. Over the years, there have been limited changes to leagues at the Double-A level, with the Texas League remaining in Double-A since 1946, the Eastern League since 1963, and the Southern League since 1964.
Currently, Double-A is the second-highest level in the MiLB hierarchy, positioned between Triple-A and High-A. Double-A teams are affiliated with Major League Baseball (MLB) clubs, and players are often promoted or demoted based on performance and developmental needs.
Double-A baseball is organized into three main leagues, each featuring several teams further divided into divisions. This provides for a structured environment for player development and competitive play.
At this time, there are 30 Double-A teams, one for each MLB team. These are organized into the Eastern League, the Southern League, and the Texas League.
Before 2021, all three active Double-A leagues played split seasons, with teams winning their division in either half of the season qualifying for the postseason. Currently, the top two teams in each league meet in a best-of-five postseason series to determine league champions.
The Eastern League has two divisions: Northeast and Southwest. The Northeast Division consists of the Binghampton Rumble Ponies, Hartford Yard Goats, New Hampshire Fisher Cats, Portland Sea Dogs, Reading Fightin Phils, and Somerset Patriots. The Southwest Team includes the Akron RubberDucks, Altoona Curve, Chesapeake Baysox, Erie SeaWolves, Harrisburg Senators, and Richmond Flying Squirrels.
The Southern League has North and South divisions. The North Division includes the Birmingham Barons, Chattanooga Lookouts, Knoxville Smokies, and Rocket City Trash Pandas, while the South Division consists of the Biloxi Shuckers, Columbus Clingstones, Montgomery Biscuits, and Pensacola Blue Wahoos.
The Texas League includes North and South divisions. The North Division consists of the Arkansas Travelers, Northwest Arkansas Naturals, Springfield Cardinals, Tulsa Drillers, and Wichita Wind Surge. Its South Division has the Amarillo Sod Poodles, Corpus Christi Hooks, Frisco RoughRiders, Midland RockHounds, and San Antonio Missions.
Promotion from Single-A to Double-A play can be one of the most difficult for players because this is the level at which pitchers need to have a good off-speed pitch in their repertoires. Additionally, fastball-only hitters have to learn to hit off-speed pitches.
Teams playing at the Double-A level tend to have more stable rosters, allowing fans to get better acquainted with the players.
Websites representing or focused on Double-A baseball, or either of its leagues, divisions, or teams, are appropriate for this part of our web guide.
Recommended Resources
Playing at Canal Park in downtown Akron, Ohio, the RubberDucks are a MiLB team playing in the Eastern League as a Double-A affiliate of the Cleveland Guardians. The franchise began as the Binghamton Triplets, a charter member of the New York-Penn League in 1923. The official team website introduces Canal Park, including a guide to the layout of the stadium, a seating chart, directions, and parking. Ticket options, promotions, game schedules, team rosters, and an online fan store are included.
https://www.milb.com/akron
The Minor League Baseball team plays home games at Peoples Natural Gas Field, a stadium in Altoona, Pennsylvania, which opened in 1999. Playing in the Eastern League, the team is the Double-A affiliate of the Pittsburgh Pirates. The official website of the team introduces the team roster, coaching staff, and front office. The team's history, media information, and a blog are included. Game schedules, scores, ticket options and sales, promotional offers, and an online shopping area are included.
https://www.milb.com/altoona
Nicknamed the Soddies, the Amarillo Sod Poodles are a Minor League Baseball team of the Texas League and the Double-A affiliate of the Arizona Diamondbacks. Team rosters, individual statistics, team stats, a scoreboard, standings, game schedules, and game-by-game results are featured on the team's official website, along with ticketing information, promotional offers, community events, a newsletter, and a fan shopping site offering branded apparel, gifts, pins, and other items.
https://www.milb.com/amarillo
Known informally as the Travs, the Arkansas Travelers are a Minor League Baseball team in North Little Rock, Arkansas. They are a Double-A affiliate of the Seattle Mariners and play in the Texas League. They currently play their home games at Dickey-Stephens Park. Ticket options and sales are featured on the website, along with team rosters, game schedules, community programs, an overview of the ballpark, and an online shopping area offering branded apparel and other items.
https://www.milb.com/arkansas
Playing home games at Keesler Federal Park in Biloxi, Mississippi, the Biloxi Shuckers are a Double-A MiLB affiliate of the Milwaukee Brewers, assigned to the Southern League. The official website for the Biloxi Shuckers presents directions to the ballpark, parking information, ballpark tours, and a seating chart. Game schedules and information about other activities and events sponsored by the club are posted, and various ticket options are available for game tickets.
https://www.milb.com/biloxi
Playing in Mirabito Stadium in Binghamton, New York, the Rumble Ponies are a MiLB team in the Eastern League and a Double-A affiliate of the New York Mets. Game schedules, game-by-game results, promotions, and other appearances are featured, along with a stadium guide, ticket options, team rosters, its coasting staff, a media guide, and a digital press box. Stadium directions, parking, and sponsorships are included. The Armory Team Store offers branded caps, apparel, and other merchandise.
https://www.milb.com/binghamton
Most of the professional baseball teams that have played in Birmingham, Alabama, have used the name Barons. The current team began in 1981, having previously been the Montgomery Rebels. The Minor League Baseball team plays in the Southern League and is a Double-A affiliate of the Chicago White Sox. The team's website introduces Regions Field, where its home games are played, and publishes game schedules, ticket information and sales, team rosters, individual and team statistics, and standings.
https://www.milb.com/birmingham
Named for the nearby Lookout Mountain, the Chattanooga Lookouts are a Minor League Baseball team of the Southern League and the Double-A affiliate of the Cincinnati Reds. Game schedules, game-by-game results, team rosters, individual and team statistics, standings, and general information about the team are provided on the official team website. Ticket options are featured, and made available for purchase online. AT&T Field, where the team plays its home games, is featured, as well.
https://www.milb.com/chattanooga
The Chesapeake Baysox is a Double-A Minor League Baseball team in Bowie, Maryland. Playing at Prince George's Stadium, they are an affiliate of the Baltimore Orioles and play in the Eastern League. From 1993 to 2024, they were known as the Bowie Baysox. Game schedules, individual and game statistics, standings, team rosters, ticket plan options, a stadium guide, and a seating diagram are published on the website, along with a partnership guide and partnership opportunities form.
https://www.milb.com/chesapeake
In 2004, the then Greenville Braves moved to Mississippi after disagreeing with the Greenville County Council for a new ballpark. Prior to 2023, the team was located in Pearl, Mississipi, playing for nineteen seasons as the Mississippi Braves. In January of 2024, the Braves announced that they would be relocating to Columbus, Georgia, and begin play in the 2025 season. It is a Double-A affiliate of the Atlanta Braves, assigned to play in the Southern League of MiLB.
https://www.milb.com/columbus-clingstones
Located in Corpus Christi, the Hooks are named for the city's association with fishing. Owned by the Houston Astros they are a Double-A Minor League Baseball team of the Texas League, in its South Division, playing home games at Whataburger Field. The team began in the Texas League as the Memphis Blues, and changed names and locations a few times before settling in Corpus Christi in 2005. Ticket sales, membership options, group outings, and game schedules are posted on the site.
https://www.milb.com/corpus-christi
Established in 1989, the Erie SeaWolves are a professional baseball team competing in Minor League Baseball (MiLB) as a member of the Eastern League's Southwest Division. Based in Erie, Pennsylvania, the SeaWolves are the Double-A affiliate of the Detroit Tigers. Playing its home games at UPMC Park, the team's official website includes directions, a seating chart, and information about hosting an event at UPMC Park. Game schedules, ticket sales, statistics, and team rosters are provided.
https://www.milb.com/erie
Commonly known as the Riders, the Frisco RoughRiders are a MiLB team of the Texas League, playing in its South Division. The RoughRiders are a Double-A affiliate of the Texas Rangers, playing its home games at Riders Field in Frisco, Texas. Season ticket memberships and other ticket options are featured, along with an introduction to Riders Field, game schedules, promotions, team rosters, standings, statistics, and employment opportunities, as well as a team store.
https://www.milb.com/frisco
The Harrisburg Senators, the Double-A affiliate of the Washington Nationals, are a Minor League Baseball team in the Eastern League. They play their home games at FNB Field on City Island in Harrisburg, Pennsylvania. The club's official website introduces the club, its front office staff, contacts, seasonal job opportunities, sponsorship opportunities, game schedules, game-by-game results, statistics, scores, ticket information, promotions, and ticket memberships.
https://www.milb.com/harrisburg
Based in Hartford, Connecticut, the Hartford Yard Goats are a Minor League Baseball team playing in the Eastern League as a Double-A affiliate of the Colorado Rockies. Its home stadium is Dunkin' Park. Team rosters, front office contacts, and employment opportunities are set forth, along with statistics, scores, team and individual statistics, standings, and game schedules. Ticket options, promotions, season tickets, group accommodations, and memberships are featured.
https://www.milb.com/hartford
.Founded in 1921, the Knoxville Smokies are a Minor League Baseball team in Knoxville, Tennessee. They are a Double-A affiliate of the Chicago Cubs and play in the Southern League. They were previously known as the Knoxville Sox, Knoxville Blue Jays, and Tennessee Smokies. Season tickets, individual tickets, and other ticket plans are featured, along with game schedules, game-by-game results, individual and team statistics, standings, photographs, videos, and front-office contacts.
https://www.milb.com/knoxville
The RockHounds were previously known as both the Midland Cubs and the Midland Angels. While Midland has been the Double-A affiliate of the Athletics since 1999, they were affiliated with the Chicago Cubs from 1972 to 1984 and the California Angels from 1985 to 1998. Based in Midland, Texas, the team plays in the Texas League. Team rosters, scores, standings, game schedules, community events, ticket sales, and promotions are highlighted, and an online shop is included
https://www.milb.com/midland
A Double-A affiliate of the Tampa Bay Rays, the Montgomery Biscuits play in the Southern League. Home games are played at Montgomery Riverwalk Stadium in Montgomery, Alabama. Game schedules, game-by-game results, individual tickets, season tickets, mini-plans, memberships, and promotions are highlighted, along with team rosters, online game viewing, and an introduction to Riverwalk Stadium, including a seating map, its front office staff, and employment opportunities.
https://www.milb.com/montgomery
A Double-A affiliate of the Toronto Blue Jays, the Fisher Cats are a MiLB team playing in the Eastern League. Its home games are played at Delta Dental Stadium in Manchester, New Hampshire. Its website features an introduction to its stadium, game schedules, including a printable schedule, promotions and giveaways, ticket options, group accommodations, season tickets, and ticket terms and conditions. Team rosters, statistics, standings, and game-by-game results are included.
https://www.milb.com/new-hampshire
Playing home games at Arvest Ballpark in Springdale, Arkansas, the Northwest Arkansas Naturals are a Minor League Baseball team in the Texas League. They are a Double-A affiliate of the Kansas City Royals. The team originated from the Wichita Wranglers when it relocated from Wichita, Kansas, to Springdale. Team rosters, statistics and scores, game schedules, promotional events, ticket options and sales, and fan resources are highlighted on the team's website.
https://www.milb.com/northwest-arkansas
A Double-A affiliate of the Miami Marlins, the Pensacola Blue Wahoos are part of the Southern League of MiLB, playing home games at Admiral Fetterman Field. The franchise began in 1959 as the Charleston White Sox, and has subsequently moved several times. Season schedules, including a printable schedule, game-by-game results, and information and sale of single tickets, group plans, season tickets, and other ticket options are set forth, along with team rosters, stats, and an online fan shop.
https://www.milb.com/pensacola
The Portland Sea Dogs, based in Portland, Maine, are a Minor League Baseball (MiLB) team in the Eastern League. Established in 1994, they are a Double-A affiliate of the Boston Red Sox. The team's official website posts game schedules, game-by-game results, online ticket sales, promotional offers, season tickets, and other ticket options, as well as seating charts, team rosters, statistics, scores, partnership opportunities, internships, and employment opportunities.
https://www.milb.com/portland
The Reading, Pennsylvania Double-A MiLB team plays in the Northeast Division of the Eastern League, playing home games at FirstEnergy Stadium. They have been the Double-A affiliate of the Philadelphia Phillies since 1967, and the team bought the team outright in 2008. Individual tickets, season tickets, and other ticket options are presented, including groups and picnic tickets. Team rosters, individual and team stats, standings, game videos, schedules, and contacts are available.
https://www.milb.com/reading
Previously known as the Norwich Navigators, then the Connecticut Defenders, the Richmond Flying Squirrels have been affiliated with the San Francisco Giants since 2010. The Minor League Baseball team is based in Richmond, Virginia. The team is part of the Eastern League and a Double-A MiLB club. Game schedules, individual and team stats, game-by-game results, team rosters, and ticket information are featured on the club's official website, including season tickets and promotional offers.
https://www.milb.com/richmond
Founded in 2020, the Rocket City Trash Pandas are a Double-A Minor League Baseball team affiliated with the Los Angeles Angels. Based in Madison, Alabama, they play their home games at Toyota Field. Single ticket sales, group options, season tickets, and seating charts are featured, along with game schedules, promotions and giveaways, team rosters, statistics, standings, and front-office contacts are provided, along with a guide to Toyota Field, and an online shopping area.
https://www.milb.com/rocket-city
San Antonio was home to one of the charter members of the Texas League in 1888, and it has hosted several Texas League franchises since then. The San Antonio Missions are a Double-A Minor League Baseball team and an affiliate of the San Diego Padres. An introduction to Wolff Stadium, where the Missions play their home games, is provided, along with ticket options, season memberships, game schedules, a promotional calendar, team rosters, and front office contacts.
https://www.milb.com/san-antonio
A Double-A affiliate of the New York Yankees, the Somerset Patriots are a professional Minor League Baseball (MiLB) team based in Bridgewater, New Jersey. Previously members of the independent Atlantic League of Professional Baseball (ALPB) from 1998 to 2020, they currently compete in the Eastern League, known as the Double-A Northeast in 2021. Game schedules, promotional schedules, and other events are featured, along with ticket options, team rosters, statistics, and online game videos.
https://www.milb.com/somerset
The Double-A Minor League Baseball team plays its home games at Hammons Field in Springfield, Missouri. An affiliate of the St. Louis Cardinals, they are members of the Texas League's North Division. Ticket sales, options, membership programs, schedules, promotions, and community programs are discussed. Team rosters, scores, statistics, league standings, press releases, and a team store with branded caps, tee-shirts, cards, novelties, and other items are available.
https://www.milb.com/springfield
The Texas League is a Minor League Baseball league that has operated in the South Central United States since 1902, although it traces its lineage back to a predecessor from 1888. Despite the name, only its five South Division teams are based in Texas, while its North Division teams are in Arkansas, Kansas, Missouri, and Oklahoma. Member teams are listed, along with the latest MiLB news, historical content, trivia, notable alumni, and what to expect in the future.
https://www.milb.com/news/texas-league-overview
Originating in 1977 when the two-year-old Lafayette Drillers were moved to Tulsa, Oklahoma from Louisiana, the Tulsa Drillers are a MiLB team that plays in the Texas League, and a Double-A affiliate of the Los Angeles Dodgers. Ticket options, sales, membership programs, and promotional offers are featured on the team's website, along with game schedules, statistics, standings, scores, game results, team rosters, videos, and an online fan store are available on the team's website.
https://www.milb.com/tulsa
The Wind Surge was supposed to begin play in 2020 as a Triple-A affiliate of the Miami Marlins. However, due to the COVID-19 cancellation of the 2020 season and a 2021 realignment of MiLB, they were dropped down to Double-A as an affiliate of the Minnesota Twins without having played a Triple-A game. They are a Texas League's North Division member, playing in Wichita, Kansas. Schedules, ticket information, team rosters, scoreboards, statistics, standings, and community programs are highlighted.
https://www.milb.com/wichita
