Baseball players are wearing the number 21 to honor Roberto Clemente, a legendary Puerto Rican baseball player and humanitarian. Major League Baseball celebrates Roberto Clemente Day on September 15, during which all players, managers, coaches, and umpires wear a patch with the number 21 on their uniforms to honor his legacy. Additionally, players of Puerto Rican heritage, past Roberto Clemente Award recipients, and the current nominees for the award have the option to wear the number 21 on their jerseys. Roberto Clemente was a Hall of Famer known for his exceptional career and humanitarian efforts. He was the first Latino player to reach 3,000 hits, a 15-time All-Star, and tragically died in a plane crash while delivering earthquake relief supplies in 1972. The number 21 became synonymous with him, and the patch and wearing of this number serve as a tribute to his impact on the game and his community. This tradition coincides with National Hispanic Heritage Month and is a league-wide recognition of his achievements and charitable legacy.