High-A (officially Class High-A, formerly known as Class A-Advanced, and sometimes abbreviated "A+" in writing) is the third-highest level of play in Minor League Baseball in the United States and Canada, below Triple-A and Double-A, and above

Single-A Class A, also known as Single-A and sometimes as Low-A, is the fourth-highest level of play in Minor League Baseball in the United States, below Triple-A, Double-A, and High-A. There are 30 teams classified at the Single-A level, one for each ...

. There are 30 teams classified at the High-A level, one for each team in

Major League Baseball Major League Baseball (MLB) is a professional baseball organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the National League (NL) and the American League (AL), ...

(MLB), organized into three leagues: the

Midwest League The Midwest League is a Minor League Baseball league established in 1947 and based in the Midwestern United States. A Class A league for most of its history, the league was promoted to High-A as part of Major League Baseball's 2021 reorganizat ...

Northwest League The Northwest League is a Minor League Baseball league that operates in the Northwestern United States and Western Canada. A Class A Short Season league for most of its history, the league was promoted to High-A as part of Major League Basebal ...

, and

South Atlantic League The South Atlantic League, often informally called the Sally League, is a Minor League Baseball league with teams predominantly in states along the Atlantic coast of the United States from New York to Georgia. A Class A league for most of its ...

History

Class High-A was established as a classification level within Minor League Baseball in 1990 by subdividing the existing Class A. Class A had been the third-highest level in the minor leagues since 1936 (when it was below Double-A and Class A1) and a hierarchy of Triple-A and Double-A above Class A had been in place since 1946. In 1963, the three classes below Class A (Classes B, C, and D) were abolished, with leagues at those levels moved into Class A. In 1965, Class A was subdivided for the first time, with the establishment of lower-level

Class A Short Season Class A Short Season (officially Short-Season A) was a level of play in Minor League Baseball in the United States from 1965 through 2020. In the hierarchy of minor league classifications, it was below Triple-A, Double-A, Class A-Advanced (cre ...

leagues. The 1965 hierarchy was in place for 25 years, until Class A was further subdivided in 1990, with Class A-Advanced becoming the third-highest classification: # Triple-A # Double-A # Class A-Advanced # Class A ("Full-Season A") # Class A Short Season ("Short-Season A") # Rookie league Three leagues, each previously Class A, received the Class A-Advanced designation: the California League,

Carolina League The Carolina League is a Minor League Baseball league which has operated along the Atlantic Coast of the United States since 1945. Having been classified at various levels throughout its existence, it operated at Class A-Advanced from 1990 unti ...

, and Florida State League. This arrangement continued until 2021, when

(MLB) restructured the minor leagues, eliminating Class A Short Season and discontinuing the use of all historical league names within Minor League Baseball. The existing Class A-Advanced leagues were moved to the Class A level and operated under generic names (

Low-A West The California League is a Minor League Baseball league that operates in California. Having been classified at various levels throughout its existence, it operated at Class A-Advanced from 1990 until its demotion to Single-A following Major Leag ...

Low-A East The Carolina League is a Minor League Baseball league which has operated along the Atlantic Coast of the United States since 1945. Having been classified at various levels throughout its existence, it operated at Class A-Advanced from 1990 unt ...

, and

Low-A Southeast The Florida State League (FSL) is a Minor League Baseball league based in the state of Florida. Having been classified at various levels throughout its existence, it operated at Class A-Advanced from 1990 until its demotion to Single-A following ...

) during 2021. The Class A-Advanced level was officially renamed as "Class High-A", and also operated three leagues during 2021 with generic names:

High-A Central The Midwest League is a Minor League Baseball league established in 1947 and based in the Midwestern United States. A Class A league for most of its history, the league was promoted to High-A as part of Major League Baseball's 2021 reorganizat ...

High-A East The South Atlantic League, often informally called the Sally League, is a Minor League Baseball league with teams predominantly in states along the Atlantic coast of the United States from New York to Georgia. A Class A league for most of its h ...

, and

High-A West The Northwest League is a Minor League Baseball league that operates in the Northwestern United States and Western Canada. A Class A Short Season league for most of its history, the league was promoted to High-A as part of Major League Basebal ...

. These three High-A leagues had historically been known as the

, and

—the first two had previously operated at the Class A level, while the latter had previously operated at the Class A Short Season level. Following MLB's acquisition of the rights to the names of the historical minor leagues, MLB announced on March 16, 2022, that the leagues would revert to their prior names, effective with the 2022 season.

Current teams

Midwest League

Northwest League

South Atlantic League

Playoffs

On June 30, 2021, Minor League Baseball announced that the top two teams in each league (based on full-season

winning percentage In sports, a winning percentage is the fraction of games or matches a team or individual has won. The statistic is commonly used in standings or rankings to compare teams or individuals. It is defined as wins divided by the total number of match ...

, and regardless of division) would meet in a best-of-five postseason series to determine league champions.

References

External links

* {{South Atlantic League Minor league baseball Midwest League Northwest League South Atlantic League