Performance enhancing drugs
major league baseball
The letters on umpires' jackets typically represent the initials of the league or organization they officiate for. For example, in Major League Baseball, umpires may wear jackets with "MLB" for Major League Baseball. These letters serve to identify the umpires' affiliation and signify their authority within that league.
MLB may stand for several different things. It is most commonly understood to stand for "Major League Baseball", a baseball organization popular in the United States. In business and accounting it stands for "Material, Labor, Burden."
Major League Baseball Players Association
In Major League Baseball, NLDS stands for the National League Division Series which determines which two teams from the National League will advance to the National League Championship Series. The Division Series consist of two best-of-five series, featuring the three division winners and a wild-card team.
Yes. Major League Baseball is the name of an organization and is therefore a proper noun. Iterations such as "major leagues" don't need to be capitalized, because they are not proper.
Major League Lacrosse
South Australian National Football League
national league baseball
GBL in Baseball means "Golden Baseball League
National Hockey League
MLG stands for Major League Gaming