Major League Baseball (MLB) will continue to honor Roberto Clemente in its own way and in perpetuity. – Latino Sports
MLB celebrates Roberto Clemente Day as players wear No. 21, call for number to be retired
Roberto Clemente as influential as ever 50 years after death - Los Angeles Times
MLB expands list of who can wear No. 21 to honor Roberto Clemente on Sept. 15 - ESPN
All Puerto Rican players can wear 21 on Roberto Clemente Day
All of MLB's Puerto Rican players can wear No. 21 on Roberto Clemente Day
Report: Puerto Rican MLB Players Allowed to Wear No. 21 on Roberto Clemente Day, News, Scores, Highlights, Stats, and Rumors
Pirates, Major League Baseball, Set to Honor the Great One on Clemente Day - Pittsburgh Baseball Now
SF Giants' Ortiz, García to wear No. 21 on Roberto Clemente Day
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente – Twin Cities
Entire Pirates team will wear No. 21 to honor Roberto Clemente