How old were they?

Jim Beattie

P · Born July 4, 1954

Age in each postseason series

1. 1978 ALCS (October 3, 1978), Yankees vs Royals 3–1: 24 years, 91 days
2. 1978 World Series (October 10, 1978), Yankees vs Dodgers 4–2: 24 years, 98 days

Age in each season

1. 1978 (Yankees): 23 years, 271 days to 24 years, 89 days
2. 1979 (Yankees): 24 years, 271 days to 25 years, 89 days
3. 1980 (Mariners): 25 years, 272 days to 26 years, 89 days
4. 1981 (Mariners): 26 years, 271 days to 27 years, 89 days
5. 1982 (Mariners): 27 years, 271 days to 28 years, 89 days
6. 1983 (Mariners): 28 years, 271 days to 29 years, 89 days
7. 1984 (Mariners): 29 years, 272 days to 30 years, 89 days
8. 1985 (Mariners): 30 years, 271 days to 31 years, 89 days
9. 1986 (Mariners): 31 years, 271 days to 32 years, 89 days