Puerto Rican players follow Pirates' push to wear No. 21
Pittsburgh Pirates to wear No. 21 on Roberto Clemente Day
Joe, Suwinski hit back-to-back HRs in Pirates' win over Reds
We're proud to wear No. 21 tonight. - Pittsburgh Pirates
Nick Gonzales to make MLB debut with the Pittsburgh Pirates
Pittsburgh Pirates welcome fans back to PNC Park with win over
50 years ago when the Pittsburgh Pirates fielded a team of All
We're speaking out': Young Pirates proud of message sent in
Roberto Clemente - Wikipedia
Why are MLB players wearing 21? Tributes around the league for