How old were they?

Dave Duncan

C · Born September 26, 1945

Age in each postseason series

1. 1971 ALCS (October 3, 1971), Athletics vs Orioles 0–3: 26 years, 7 days
2. 1972 ALCS (October 7, 1972), Athletics vs Tigers 3–2: 27 years, 11 days
3. 1972 World Series (October 14, 1972), Athletics vs Reds 4–3: 27 years, 18 days

Age in each season

1. 1964 (Athletics): 18 years, 188 days to 19 years, 5 days
2. 1967 (Athletics): 21 years, 187 days to 22 years, 5 days
3. 1968 (Athletics): 22 years, 188 days to 23 years, 5 days
4. 1969 (Athletics): 23 years, 187 days to 24 years, 5 days
5. 1970 (Athletics): 24 years, 187 days to 25 years, 5 days
6. 1971 (Athletics): 25 years, 187 days to 26 years, 5 days
7. 1972 (Athletics): 26 years, 188 days to 27 years, 5 days
8. 1973 (Indians): 27 years, 187 days to 28 years, 5 days
9. 1974 (Indians): 28 years, 187 days to 29 years, 5 days
10. 1975 (Orioles): 29 years, 187 days to 30 years, 5 days
11. 1976 (Orioles): 30 years, 188 days to 31 years, 5 days