Sources: MLB letting more players to wear No. 21 for Clemente Day
Roberto Clemente, Pittsburgh's Hero
Roberto Clemente Day 9 15 2023
Roberto Clemente Day @ T-Mobile Park - The Ticket
Roberto Clemente, Not Just a Baseball Player but a Hero – 9 Inning Know It All
Tampa Bay Rays honor Roberto Clemente by starting nine Latin American position players - The Boston Globe
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
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Celebrating Roberto Clemente day : r/baseball
MLB celebrates Roberto Clemente Day 2022
Roberto Clemente Foundation 21
Roberto Clemente Day: Who was Roberto Clemente and what were his records in the MLB?