For the 'Great One': Pirates, MLB honor Roberto Clemente
Celebrating Roberto Clemente day : r/baseball
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Roberto Clemente - Wikipedia
Pirates wear No. 21 to honor Roberto Clemente
Roberto Clemente's No. 21 is 'retired in our hearts' but not on most MLB rosters - The Athletic
Members of Red Sox wear No. 21 with pride on Roberto Clemente Day - The Boston Globe
Nats DH Cruz, other Clemente Award winners wear '21' on caps - The San Diego Union-Tribune
Roberto Clemente Day celebrated around MLB in 2023
Pittsburgh Pirates Celebrate Roberto Clemente Day By Wearing His Number
Yankees rally in the ninth to slip past the Pittsburgh Pirates 7-5 on Roberto Clemente Day
Pittsburgh Pirates - Roberto Clemente Number 21 Replica Jersey - Mens XL