Diamondbacks Orioles Baseball

Arizona Diamondbacks players wear No. 42 to commemorate Jackie Robinson Day, as they observe the national anthem before a baseball game against the Baltimore Orioles, Wednesday, April 15, 2026, in Baltimore.

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MLB celebrates Jackie Robinson Day as every player wears No. 42 on anniversary of his historic debut

MLB celebrates Jackie Robinson Day as every player wears No. 42 on anniversary of his historic debut

Major League Baseball is celebrating Jackie Robinson Day with every player, coach and umpire wearing his No. 42 to mark the 79th anniversary of the infielder breaking the sport’s color barrier. Robinson debuted for the Brooklyn Dodgers on April 15, 1947. He went on to win Rookie of the Year honors, become a six-time All-Star and the 1949 National League MVP. He played in six World Series, and won his only championship in 1955 with the Dodgers. The Los Angeles Dodgers and New York Mets gathered at Robinson's statue in centerfield to reflect on his legacy at Dodger Stadium.