It's time for Roberto Clemente's No. 21 to be retired across baseball - Bucs Dugout
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
MLB Clemente Award winners wear his 21 on caps for careers
Jackie Robinson Day 2020, All Players Wearing #42 and Patches Today – SportsLogos.Net News
MLB Ballplayers Can Now Wear #21 Patch on Ballcaps and Helmets – SportsLogos.Net News
ESPN: MLB to allow Pirates, Puerto Rican players, award nominees to wear No. 21 on Roberto Clemente Day
Nats DH Cruz, other Clemente Award winners wear '21' on caps
MLB - For the first time in 47 years, Pirates players are
Pirates wear No. 21 to honor Roberto Clemente