Pirates will honor Roberto Clemente by wearing his No. 21 on their jerseys - ESPN

Pittsburgh Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente

Five Astros wear No. 21 on Roberto Clemente Day

MLB's Pirates will honor Roberto Clemente by wearing his number

MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago

Pirates will wear Roberto Clemente No. 21

ESPN - Roberto Clemente won 12 Gold Gloves, two World Series titles, an NL MVP award, got 3,000 hits and made 15 All-Star appearances. Thoughts?

Pirates wear No. 21 to honor Roberto Clemente

Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News

Pirates, MLB honour 'the Great One' Roberto Clemente