Pittsburgh Pirates will all wear No. 21 to celebrate Roberto Clemente Day in 2020, per report
Oakland A's: Happy Roberto Clemente Day! - Athletics Nation
Rays again lean into Roberto Clemente Day event
MLB allows Puerto Rican players to wear No. 21 on Roberto Clemente Day - ESPN
Sources: MLB letting more players to wear No. 21 for Clemente Day
MLB Celebrates Roberto Clemente Day
ESPN: MLB to allow Pirates, Puerto Rican players, award nominees to wear No. 21 on Roberto Clemente Day
Report: MLB allowing more players to wear No. 21 on Roberto Clemente Day
To Honor Roberto Clemente, MLB Expands List of Who Can Wear No. 21 - Sports - Remezcla
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
Retire No. 21 for Roberto Clemente - Our Esquina
MLB's Pirates will honor Roberto Clemente by wearing his number
Pirates will honor Roberto Clemente by wearing his No. 21 on their jerseys - ESPN
Tampa Bay Rays honor Roberto Clemente by starting nine Latin American position players - The Boston Globe
MLB - Today, we remember Roberto Clemente, a great