Why are MLB players wearing No. 42 jerseys today?

42 facts about Jackie Robinson to celebrate the 75th anniversary of his breaking the color barrier

Jackie Robinson Mitchell & Ness Nostalgia Co.

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

Jackie Robinson Day: Every MLB player will wear No. 42 to honor baseball icon

The Red Sox And All MLB Teams Celebrate Diversity On Jackie Robinson Day By Wearing #42

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

Philadelphia Phillies - Photo of Taijuan Walker wearing a Jackie Robinson shirt that says Breaking barriers with the number 42 on it. He is also wearing gray baseball pants and a backwards

MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago

Rubama: Coaches wanted their team of 7-year-olds to learn about Jackie Robinson. They got a lesson and wore No. 42 jerseys. – The Virginian-Pilot

Mariano Rivera Wearing Jackie Robinson's 42 to the End - The New York Times

Gott's Thoughts: College baseball needs to retire the No. 42 jersey to honor Robinson - Daily Bruin