How old were they?

Claude Cooper

LF · Born April 1, 1892

Age in each postseason series

1. 1913 World Series (October 7, 1913), Giants vs Athletics 1–4: 21 years, 189 days

Age in each season

1. 1913 (Giants): 21 years, 0 days to 21 years, 183 days
2. 1914 (Tip-Tops): 22 years, 0 days to 22 years, 183 days
3. 1915 (Tip-Tops): 23 years, 0 days to 23 years, 183 days
4. 1916 (Phillies): 24 years, 0 days to 24 years, 183 days
5. 1917 (Phillies): 25 years, 0 days to 25 years, 183 days