MLB Celebrates Roberto Clemente Day
Outside The Confines: Everyone wore 21 - Bleed Cubbie Blue
Houston Astros: 8 players don No. 21 on Roberto Clemente Day
Wearing Roberto Clemente's No. 21 an honor for Francisco Lindor, Sandy Alomar Jr. and all Puerto Rican-born Cleveland Indians
MLB should retire Roberto Clemente's No. 21
SF Giants' Ortiz, García to wear No. 21 on Roberto Clemente Day
Sources: MLB letting more players to wear No. 21 for Clemente Day
Should Roberto Clemente's #21 Be Universally Retired Across MLB?
Tampa Bay Rays honor Roberto Clemente by starting nine Latin American position players - The Boston Globe
Puerto Rican players follow Pirates' push to wear No. 21, celebrate Roberto Clemente
Pirates honor Roberto Clemente but come up short on baseball end
HHM 2021 - Roberto Clemente
Puerto Rican MLB players can wear number 21 on Clemente Day