The number 21 in baseball is most famously associated with Roberto Clemente, a legendary Puerto Rican Hall of Famer who wore No. 21 throughout his Major League Baseball career with the Pittsburgh Pirates. Clemente was a 15-time All-Star, 12-time Gold Glove winner, and the first Latin American player inducted into the Baseball Hall of Fame. His number 21 has become iconic and is honored annually on Roberto Clemente Day, when all MLB players, managers, coaches, and umpires wear a No. 21 patch. Players of Puerto Rican descent, Roberto Clemente Award nominees, and some award recipients have the option to wear No. 21 on their uniforms in tribute to Clemente's legacy. His number 21 was retired by the Pirates, but MLB allows players to wear it on this special day to celebrate his achievements on and off the field.
