Jackie Robinson and Number 42: The Man Who Broke Baseball's Color Barrier
On April 15, 1947, Jackie Robinson took the field for the Brooklyn Dodgers as the first Black player in modern major league history. Why every player wears 42 on that date each year.
Every April 15, every player, coach and umpire in Major League Baseball wears the same number: 42. It is Jackie Robinson Day, honouring a player who changed baseball and helped change American society.
A segregated game
For the first half of the twentieth century, professional baseball in the United States had an unwritten colour line: Black players were kept out of the major leagues and played in the Negro Leagues instead. Those leagues had stars as good as any in the majors, who never got the chance to play on the biggest stage because of the colour of their skin.
A bold decision
Brooklyn Dodgers executive Branch Rickey set out to break that line. The man he chose was Jackie Robinson, then playing for the Kansas City Monarchs of the Negro Leagues. Robinson had starred in four sports in college and served in the Army. Rickey valued more than his talent; he valued his self-control. He needed a player who could take every insult without striking back.
In 1946 Robinson played for the Dodgers' minor league club, the Montreal Royals. On April 15, 1947, he played first base for Brooklyn and became the first Black player in modern major league history.
A rookie who endured everything
Robinson's first season was brutal. He faced abuse from opposing players, taunts from fans and even death threats. Some opponents spiked him on purpose and some pitchers threw at him. Keeping his promise to Rickey, he answered with his play.
That year he won the first Rookie of the Year award in major league history. In 1949 he won the batting title with a .342 average and was named National League MVP. He made six All-Star teams, helped the Dodgers win the 1955 World Series and was elected to the Hall of Fame in 1962.
Number 42, retired across baseball
In 1997, on the fiftieth anniversary of his debut, Major League Baseball retired number 42 for every team, the first number ever retired league-wide. Players already wearing it were allowed to keep it until they retired; the last was Yankees closer Mariano Rivera, who retired in 2013.
Since 2004, April 15 has been Jackie Robinson Day, and since 2009 everyone in uniform wears 42 that day, so every ballpark remembers the history together.
More than a ballplayer
After his playing days Robinson remained active in the civil rights movement, using his influence to fight for equality. He died in 1972, but the door he opened let countless players of every colour and nationality reach the majors, including today's stars from Asia and Latin America.
Why his story still matters
Robinson's courage is often remembered as a single moment, but it was a daily choice he made for years, in every city the Dodgers visited. Each time he stayed calm under abuse and kept playing well, he made it harder for anyone to argue that Black players did not belong. That patience and resolve changed what people thought was possible, both on the field and far beyond it.
Those who followed
A few months after Robinson's debut, in July 1947, Larry Doby joined the Cleveland Indians and became the first Black player in the American League. Over the following decade, stars such as Willie Mays, Hank Aaron and Ernie Banks arrived, and the face of the major leagues changed for good. Every one of them walked a road that Robinson had opened.
Their success also changed the business of the game. Clubs that integrated early gained access to a deep pool of talent, and teams that held back fell behind on the field. Within a generation, a league that had once shut its doors was being shaped by the very players it had excluded.
For Baseball Dream players
In Baseball Dream, players from around the world compete in the same leagues. That kind of baseball world began the day Robinson stepped onto the field. Next time you build your roster, it is worth remembering how it started.