April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie Robinson on 50th anniversary – Society for American Baseball Research

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April 15, 22, 2022. Ken Griffey Jr attend Jackie Robinson Day 2022 a Tribute around MLB on 75th anniversary of Robinson's debut in Time Square in New York April 15, 2022 Credit; RW/MediaPunch Stock Photo - Alamy

Ken Griffey Jr. Started Wearing 42 on Jackie Robinson Day! #shorts

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Ken Griffey Jr. – Society for American Baseball Research

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Amateur Athletic Union (AAU)

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