Pirates players, coaches honored to wear No. 21 in celebration of Roberto Clemente Day
Five Astros wear No. 21 on Roberto Clemente Day
50 Years Later, the Pirates' Lineup of Color Still Resonates - The New York Times
Family, friends and fans celebrate Clemente at fundraiser
Yankees rally in the ninth to slip past the Pittsburgh Pirates 7-5 on Roberto Clemente Day
Roberto Clemente's #21 To Be Worn By All Pittsburgh Pirates For Clemente Day
MLB's Pirates will honor Roberto Clemente by wearing his number
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
Pittsburgh Pirates each don No. 21 to honor Roberto Clemente - ESPN
Mets honor Roberto Clemente at Citi Field