Chicago Cubs
The New York Yankees won 40 American League pennants. That is the most in major league baseball.
Most probably AL, refers to Major League Baseball's American League. In amateur baseball it may refer to American Legion baseball.
Sammy Sosa
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The Dominican Republic
As of August 30, 2007 the team with the most franchise losses is the Philadelphia Phillies who have a franchise record of 8835-10017. Second most losses is the Atlanta Braves whose franchise record is 9681-9704.
being the first African-American to play in Major League Baseball
Athletics with 9.
being the first African-American to play in Major League Baseball
The Baltimore Orioles hold the American League record for most consecutive losses. The ballclub lost its first 21 games of the 1988 season. The 1961 Philadelphia Phillies set the modern major league record with 23 straight losses.
Most American League Cy Young awards. Clemens has 7.