The move to wear the number, similar to MLB’s celebration of Jackie Robinson’s No. 42 each April 15, started with the Pittsburgh Pirates. Roberto Clemente Jr., son of the late Hall of Famer, said he received a text from Pirates third base coach Joey Cora on July 29 at the behest of Pittsburgh manager Derek Shelton, asking whether all Pirates players could wear the number on Sept. 9.

“We are very, very fortunate that someone took that initiative, and it was Derek Shelton and Joey, a very proud Puerto Rican who has always been there pushing the envelope inside,” Clemente Jr. said Monday. “There was some pushback, but the players’ association and the players really thought it would be great.”

Clemente Jr. plans to be at PNC Park. He credited Leonor Colon, the union’s senior director of international and domestic player operations, with helping to get the initiative in place. Clemente’s brothers Luis and Enrique also helped formulate the plan.

Major League Baseball home teams on Wednesday will honor their nominees for the Clemente Award, given annually during the World Series to a player who best represents baseball through character, community involvement, philanthropy and contributions on and off the field. Teams that are not home will honor their nominees when they return to their ballpark for their next home game.