Los Angeles Angels players all wear number 42 in honor of Jackie Robinson Day as they observe the national anthem before a baseball game against the Texas Rangers, Tuesday, April 15, 2025, Arlington,

MLB chose to celebrate Jackie Robinson Day on April 15 to mark the anniversary of his first game with the Dodgers. Robinson officially broke the color barrier April 15, 1947. On that date, Robinson started at first base and hit second in a 5-3 win over the Boston Braves. Robinson went 0-for-3 with a sacrifice bunt in his first game in the majors.