Why are MLB players wearing No. 42 jerseys today?

Red Sox to wear three uniforms in series versus Angels: What they mean

MLB players write letters to Jackie Robinson

Uniform number (Major League Baseball) - Wikipedia

Robinson's 42 In Dodger Blue For All Uniforms On April 15

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

Jackie Robinson Day 2023: MLB players wear No. 42 to honor trailblazer

Major League Baseball honored Jackie Robinson with players, coaches and umpires all wearing Robinson's uniform number, 42. Here, Boston Red Sox first baseman Kevin Youkilis, left, mans the bag along with Minnesota

Yankees' Mariano Rivera Is the Last No. 42 - The New York Times

Cincinnati Reds on X: Let's take a look at the 2018 holiday and special event #RedsThreads! We'll start with Jackie Robinson Day on April 15 vs. STL, the 71st anniversary of Robinson

Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News

Jackie Robinson Day Something That Baseball Does Right Every Year - Sports Illustrated Tampa Bay Rays Scoop News, Analysis and More