How old were they?

Fred McMullin

3B · Born October 13, 1891

Age in each postseason series

1. 1917 World Series (October 6, 1917), White Sox vs Giants 4–2: 25 years, 358 days
2. 1919 World Series (October 1, 1919), White Sox vs Reds 3–5: 27 years, 353 days

Age in each season

1. 1914 (Tigers): 22 years, 170 days to 22 years, 353 days
2. 1916 (White Sox): 24 years, 171 days to 24 years, 354 days
3. 1917 (White Sox): 25 years, 170 days to 25 years, 353 days
4. 1918 (White Sox): 26 years, 170 days to 26 years, 353 days
5. 1919 (White Sox): 27 years, 170 days to 27 years, 353 days
6. 1920 (White Sox): 28 years, 171 days to 28 years, 354 days