The New York Yankees players are wearing number 21 to honor Roberto Clemente on Roberto Clemente Day, which is celebrated every September 15 in Major League Baseball (MLB). MLB players have the option to wear number 21 on their jerseys as a tribute to Clemente, who wore that number during his legendary career. This day also coincides with the start of Hispanic Heritage Month to celebrate Clemente's legacy as the greatest and most influential Latino player in baseball history. Several Yankees stars, including Aaron Judge, Juan Soto, Giancarlo Stanton, Anthony Rizzo, José Treviño, and Marcus Stroman, have worn number 21 in tribute to Clemente's impact on the sport and his humanitarian legacy. Clemente was renowned for his sportsmanship, community involvement, and positive contributions both on and off the field, and he tragically died in 1972 while trying to help earthquake victims. MLB recognizes Roberto Clemente Day as a way to honor his life, contributions, and role as an inspiration for Latino youth and the baseball community.