![July 25, 1956: Roberto Clemente hits an inside-the-park, walk-off grand slam to lift Pirates – Society for American Baseball Research July 25, 1956: Roberto Clemente hits an inside-the-park, walk-off grand slam to lift Pirates – Society for American Baseball Research](https://sabr.org/sites/default/files/images/Clemente06.jpg)
July 25, 1956: Roberto Clemente hits an inside-the-park, walk-off grand slam to lift Pirates – Society for American Baseball Research
![The Team That Changed Baseball: Roberto Clemente and the 1971 Pittsburgh Pirates: Markusen, Bruce: 9781594160899: Amazon.com: Books The Team That Changed Baseball: Roberto Clemente and the 1971 Pittsburgh Pirates: Markusen, Bruce: 9781594160899: Amazon.com: Books](https://m.media-amazon.com/images/I/81WIZtEN6EL._AC_UF1000,1000_QL80_.jpg)
The Team That Changed Baseball: Roberto Clemente and the 1971 Pittsburgh Pirates: Markusen, Bruce: 9781594160899: Amazon.com: Books
![164 Portrait Of Pittsburgh Pirates Roberto Clemente Stock Photos, High-Res Pictures, and Images - Getty Images 164 Portrait Of Pittsburgh Pirates Roberto Clemente Stock Photos, High-Res Pictures, and Images - Getty Images](https://media.gettyimages.com/id/461092836/photo/outfielder-roberto-clemente-21of-pittsburgh-pirates-looks-on-in-this-portrait-prior-to-the.jpg?s=612x612&w=gi&k=20&c=0sDEK9U-49ma1ng21A5f9GvwRAlrMqlsMLTP9gRvjmU=)
164 Portrait Of Pittsburgh Pirates Roberto Clemente Stock Photos, High-Res Pictures, and Images - Getty Images
![Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ABC7 New York Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ABC7 New York](https://a.espncdn.com/photo/2020/0910/r743186_2_1296x729_16-9.jpg)
Pittsburgh Pirates, New York Mets players, coaches to all wear No. 21 on Roberto Clemente Day - ABC7 New York
![All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News](https://content.sportslogos.net/news/2020/09/roberto-clemente-pirates-200x200.jpg)