Jackie Robinson's No. 42 is retired to honor the man who broke the color barrier in baseball in 1947.
All of MLB to wear Jackie Robinson's No. 42 in Dodger Blue on April 15 - ESPN
MLB celebrates Jackie Robinson Day: 15-16 April - World Baseball Softball Confederation
Jackie Robinson's Career in the Army
MLB players to wear No. 42 — in Dodger blue — for 75th anniversary of Jackie Robinson's big league debut
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Jackie Robinson Day - Bluebird Banter
Jackie Robinson Day 2023: MLB players wear No. 42 to honor trailblazer
MLB honors Jackie Robinson Day and pays tribute to his barrier-breaking career
The only day MLB players can wear No. 42? Jackie Robinson Day
Why every MLB player is wearing No. 42 today