Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente - NBC
MLB expands list of who can wear No. 21 to honor Roberto Clemente
Roberto Clemente Day: MLB expands list of who can wear No. 21 to
Díaz homers in 7th to break tie, Astros beat A's 5-2
Díaz homers in 7th to break tie, Astros beat A's 5-2
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of
MLB celebrates Roberto Clemente Day to commemorate 50 years since
Cardinals Molina homers wearing 21 on Roberto Clemente Day
Why are MLB players wearing 21? Tributes around the league for
Roberto Clemente Day celebrated across Major League Baseball
Why some players have No. 21 on back of their baseball caps