He played over 2000 games. That was a record that wasn't broken for 50 years. But then something bad happened. He could barely swing the bat and he couldn't run around the bases any more. He knew that something was wrong.
Death usually comes in two to five years.
That same year he was voted into the Hall of Fame. Players were usually not voted into the Hall of Fame until after they had been retired for two years. Even though he could no longer play baseball, he continued to work. He kept working until he died in 1941. This means that no one could say anything bad about him, because he was such a good person.