Baseball player Jackie Robinson broke Major League Baseball’s color barrier as its first Black athlete. The infielder made his debut with the Brooklyn Dodgers on April 15, 1947, and went on to have a decade-long Hall of Fame career despite repeated threats and abuse from fans and opponents. Also a vocal civil rights activist, Robinson served on the board of the NAACP and advocated for greater racial integration in sports. He died in 1972 at age 53. MLB retired Robinson’s jersey, No. 42, in 1997, and the league celebrates his legacy and accomplishments annually on Jackie Robinson Day.