Answer
The number 41 was retired by the Mets in honor of Tom Seaver. Seaver was a pitcher for the Mets from 1967 to 1977, and he is considered one of the greatest pitchers in baseball history. He won three Cy Young Awards with the Mets, and he was a member of the Mets' 1969 World Series championship team. Seaver was inducted into the Baseball Hall of Fame in 1992.