50 years after tragic plane crash, Roberto Clemente's incredible legacy only continues to grow
Pirates walk off on Roberto Clemente Day as push to retire his No. 21 continues
Curve to retire No. 21 in honor of Pirates OF Roberto Clemente on July 21, Sports
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Roberto Clemente's No. 21 is 'retired in our hearts' but not on most MLB rosters - The Athletic
Pirates, Mets honor Roberto Clemente's legacy in MLB celebration
The Pittsburgh Pirates retire Roberto Clemente's uniform number 21 in a moving pre-game ceremony - This Day In Baseball
Curve to retire No. 21, honor Roberto Clemente and family
Curve Set to Retire No. 21 In Honor of Roberto Clemente
Senate resolution honoring Pirates baseball legend Roberto Clemente