MLB's Puerto Rican-born players honor Roberto Clemente by wearing 21
Roberto Clemente signed with Dodgers in 1954
Pirates walk off on Roberto Clemente Day as push to retire his No
When King died, Major League Baseball struck out
Roberto Clemente, A for Athlete
Pirates to celebrate golden anniversary of another broken color
It's going to be unbelievable': Pirates psyched to honor Roberto
Demilio: Roberto Clemente Day Serves as Another Reminder to
MLB expands list of who can wear No. 21 to honor Roberto Clemente
Roberto Clemente, A for Athlete