Puerto Rican Twins don No. 21 in tribute to Roberto Clemente
Pirates, Mets wear 21 on Roberto Clemente Day
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente
New York Yankees: Puerto Ricans are born with pinstripes.
MORE
Fans, family members gather to honor Roberto Clemente 50 years
Roberto Clemente – mlbblogger
For Joey Cora and fellow Puerto Ricans, Clemente Day's meaning
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente
December 31: ¡Arriba Roberto! - Sports Illustrated Vault
Puerto Rican Twins don No. 21 in tribute to Roberto Clemente