Jackie Robinson Day is a traditional event which occurs annually in Major League Baseball, commemorating and honoring the day Jackie Robinson made his major league debut. April 15 was Opening Day in 1947, Robinson's first season in the Major Leagues. Initiated for the first time on April 15, 2004, Jackie Robinson Day is celebrated each year on that day. The festivity is a result of Robinson's memorable career, best known for becoming the first black major league baseball player of the modern era in 1947.[1][2] His debut with the Brooklyn Dodgers (today known as the Los Angeles Dodgers) ended approximately 80 years of baseball segregation, also known as the baseball color line, or color barrier. He also was inducted into the Baseball Hall of Fame in 1962, remembered for his services with the number 42 jersey.
The gala is celebrated at varied ballparks by Major League team players. On that one day, all players, coaches, and managers on both teams, and the umpires, wear #42 on their jerseys.
Shea Stadium was one of the prominent venues hosting the event, having commemorated the retirement of Robinson's number 42 jersey in 1997. Bob DuPuy, the President and Chief Operating Officer of Major League Baseball, described Jackie Robinson Day as a significance "not only for baseball, but for our country in general.
