How old were they?

Del Gainer

1B · Born November 10, 1886

Age in each postseason series

1. 1915 World Series (October 8, 1915), Red Sox vs Phillies 4–1: 28 years, 332 days
2. 1916 World Series (October 7, 1916), Red Sox vs Robins 4–1: 29 years, 332 days

Age in each season

1. 1909 (Tigers): 22 years, 142 days to 22 years, 325 days
2. 1911 (Tigers): 24 years, 142 days to 24 years, 325 days
3. 1912 (Tigers): 25 years, 143 days to 25 years, 326 days
4. 1913 (Tigers): 26 years, 142 days to 26 years, 325 days
5. 1914 (Red Sox, Tigers): 27 years, 142 days to 27 years, 325 days
6. 1915 (Red Sox): 28 years, 142 days to 28 years, 325 days
7. 1916 (Red Sox): 29 years, 143 days to 29 years, 326 days
8. 1917 (Red Sox): 30 years, 142 days to 30 years, 325 days
9. 1919 (Red Sox): 32 years, 142 days to 32 years, 325 days
10. 1922 (Cardinals): 35 years, 142 days to 35 years, 325 days