The Milwaukee Brewers, along with all MLB teams, are wearing the number 21 patch and some players are wearing the number 21 on their jerseys to honor Roberto Clemente. This is part of the league-wide celebration of Roberto Clemente Day, which takes place every year in mid-September. Clemente was a Puerto Rican Hall of Famer, humanitarian, and legendary baseball player who wore number 21 throughout his career. The "21" patch is worn on the upper left chest by all players, managers, coaches, and umpires in MLB, while players of Puerto Rican heritage, past Roberto Clemente Award recipients, and nominees have the option to wear the number 21 as their uniform number during the day's games. This tradition commemorates Clemente's legacy on and off the field, especially his humanitarian efforts that cost his life in 1972 during a relief mission. The Brewers, like other teams, participate in this to honor the memory of this baseball and humanitarian icon.