Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie

After Jackie Robinson, MLB integration was halting - The Washington Post

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

Philadelphia Phillies' Josh Harrison, Taijuan Walker reflect on declining number of Black players

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

Jackie Robinson Day: Everyone wears '42' today – Twin Cities

Baltimore area baseball teams, community gather for Jackie Robinson Memorial tournament

Sports Heroes Who Served: Baseball Great Jackie Robinson Was WWII Soldier > U.S. Department of Defense > Story

Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie Robinson day across the MLB