How old were they?

Hack Miller

LF · Born January 1, 1894

Age in each postseason series

1. 1918 World Series (September 5, 1918), Red Sox vs Cubs 4–2: 24 years, 247 days

Age in each season

1. 1916 (Robins): 22 years, 91 days to 22 years, 274 days
2. 1918 (Red Sox): 24 years, 90 days to 24 years, 273 days
3. 1922 (Cubs): 28 years, 90 days to 28 years, 273 days
4. 1923 (Cubs): 29 years, 90 days to 29 years, 273 days
5. 1924 (Cubs): 30 years, 91 days to 30 years, 274 days
6. 1925 (Cubs): 31 years, 90 days to 31 years, 273 days