How old were they?

Joe Foy

3B · Born February 21, 1943

Age in each postseason series

1. 1967 World Series (October 4, 1967), Red Sox vs Cardinals 3–4: 24 years, 225 days

Age in each season

1. 1966 (Red Sox): 23 years, 39 days to 23 years, 222 days
2. 1967 (Red Sox): 24 years, 39 days to 24 years, 222 days
3. 1968 (Red Sox): 25 years, 40 days to 25 years, 223 days
4. 1969 (Royals): 26 years, 39 days to 26 years, 222 days
5. 1970 (Mets): 27 years, 39 days to 27 years, 222 days
6. 1971 (Senators): 28 years, 39 days to 28 years, 222 days