How old were they?

Ken Phelps

DH · Born August 6, 1954

Age in each postseason series

1. 1989 ALCS (October 3, 1989), Athletics vs Blue Jays 4–1: 35 years, 58 days
2. 1989 World Series (October 14, 1989), Athletics vs Giants 4–0: 35 years, 69 days

Age in each season

1. 1980 (Royals): 25 years, 239 days to 26 years, 56 days
2. 1981 (Royals): 26 years, 238 days to 27 years, 56 days
3. 1982 (Expos): 27 years, 238 days to 28 years, 56 days
4. 1983 (Mariners): 28 years, 238 days to 29 years, 56 days
5. 1984 (Mariners): 29 years, 239 days to 30 years, 56 days
6. 1985 (Mariners): 30 years, 238 days to 31 years, 56 days
7. 1986 (Mariners): 31 years, 238 days to 32 years, 56 days
8. 1987 (Mariners): 32 years, 238 days to 33 years, 56 days
9. 1988 (Mariners, Yankees): 33 years, 239 days to 34 years, 56 days
10. 1989 (Yankees, Athletics): 34 years, 238 days to 35 years, 56 days
11. 1990 (Athletics, Indians): 35 years, 238 days to 36 years, 56 days