Houston Astros: 8 players don No. 21 on Roberto Clemente Day

Red Sox and Astros ALCS Matchup Provides a 'Moment of Pride' for Puerto Rico - The New York Times

October 1, 1967: Roberto Clemente 'manages' Pirates in season finale and wins fourth NL batting crown – Society for American Baseball Research

Houston Astros Young Star Nominated for Roberto Clemente Award - Sports Illustrated Inside The Astros

Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21

Rivera] League source confirms league-wide retirement of Roberto Clemente's #21 is not happening at this time and there is no current plan in place for it to occur : r/baseball

Díaz homers in 7th to break tie, Astros beat A's 5-2

Matt Olson is the Braves' Roberto Clemente Award nominee for 2023 - Battery Power

Roberto Clemente's No. 21 is 'retired in our hearts' but not on most MLB rosters - The Athletic

Cardinals, Molina homers wearing 21 on Roberto Clemente Day

MLB celebrates Roberto Clemente Day as players wear No. 21, call for number to be retired

Roberto Clemente Award - Wikipedia

Five Astros wear No. 21 on Roberto Clemente Day

Berrios, Guerrero Jr. help Blue Jays snap losing skid on Roberto Clemente Day