Why are MLB players wearing No. 42 jerseys today?

Last player to wear No. 42 for each MLB team

Best current MLB players at each jersey number, 1-97

MLB on X: Honoring No. 42. #Jackie42 / X

The San Diego Padres stand for the national anthem before their baseball game against the Los Angeles Dodgers, Los Angeles, Sunday, April 15, 2012. All players wore No. 42 jerseys in honor

Robinson's 42 in Dodger blue for all uniforms on April 15 - The San Diego Union-Tribune

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

Now honoring No. 42: Jackie Robinson Day in majors - The San Diego Union-Tribune

Why are MLB players wearing No. 42 jerseys today?

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

Jackie Robinson Mitchell & Ness Nostalgia Co.