How old were they?

Vance Law

3B · Born October 1, 1956

Age in each postseason series

1. 1983 ALCS (October 5, 1983), White Sox vs Orioles 1–3: 27 years, 4 days
2. 1989 NLCS (October 4, 1989), Cubs vs Giants 1–4: 33 years, 3 days

Age in each season

1. 1980 (Pirates): 23 years, 183 days to 24 years, 0 days
2. 1981 (Pirates): 24 years, 182 days to 25 years, 0 days
3. 1982 (White Sox): 25 years, 182 days to 26 years, 0 days
4. 1983 (White Sox): 26 years, 182 days to 27 years, 0 days
5. 1984 (White Sox): 27 years, 183 days to 28 years, 0 days
6. 1985 (Expos): 28 years, 182 days to 29 years, 0 days
7. 1986 (Expos): 29 years, 182 days to 30 years, 0 days
8. 1987 (Expos): 30 years, 182 days to 31 years, 0 days
9. 1988 (Cubs): 31 years, 183 days to 32 years, 0 days
10. 1989 (Cubs): 32 years, 182 days to 33 years, 0 days
11. 1991 (Athletics): 34 years, 182 days to 35 years, 0 days