The New York Yankess during the 1920s were the first team to place numbers on the backs of their players' jerseys. (They have never placed their names on their jerseys). Originally, the numbers corresponded to the players' spot in the batting order (Babe Ruth batted third and wore number 3, Lou Gherig batted fourth and wore number 4 etc). Other major league teams eventually adopted numbers for their players and used the same system. Later on as players came and went the numbers were "recycled". Some teams "retired" a number, which meant that on one would ever use that number on that team again. Usually, position players (non pitchers) are given the lower numbers, while pitchers are given the higher numbers. Each team has its own particular set of requirements for assigning numbers to its players. Besides numbers retired by a certain team, all teams have agreed never again to assign number 42 to any player in honor of Jackie Robinson, who is credited with breaking the color barrier in MLB. Only Mariano Rivera, relief pitcher for the New York Yankees, currently wears number 42, as he was grandfathered into wearing that number because it was assigned to him prior to the MLB agreement.
Currently Dustin Pedroia is number 15 for the Red Sox.
Yes
Charlie Gehringer Derek Jeter Leo Durocher
Yes, players on an MLB active roster must get at least the Major League minimum salary, whether or not they play.
12
Major league baseball players
Tim Lincecum
Alex Rodriguez.
no
major league baseball is the hightest baseball league with the best players
Major League Baseball Players Alumni Association was created in 1982.
there are not a set number
There are 25 players on a major league roster
Currently Dustin Pedroia is number 15 for the Red Sox.
There are 30 Major League Baseball teams. Each has 25 players, so there are 750 players in the Major Leagues. From September 1 through the end of the regular season (usually the first Sunday in October) teams can expand their roster to 40 players, so during that period there can be 1,200 Major League Baseball players. Teams also have 10 players on their A, AA and AAA minor league affiliates
Yes
None of the players that played in the '95 Major League Baseball World Series regardless of being from the National League Champion; Atlanta Braves or the Cleveland Indians are currently playing with any of the Major League Baseball teams in 2014.