How old were they?

Reggie Cleveland

P · Born May 23, 1948

Age in each postseason series

1. 1975 ALCS (October 4, 1975), Red Sox vs Athletics 3–0: 27 years, 134 days
2. 1975 World Series (October 11, 1975), Red Sox vs Reds 3–4: 27 years, 141 days

Age in each season

1. 1969 (Cardinals): 20 years, 313 days to 21 years, 131 days
2. 1970 (Cardinals): 21 years, 313 days to 22 years, 131 days
3. 1971 (Cardinals): 22 years, 313 days to 23 years, 131 days
4. 1972 (Cardinals): 23 years, 314 days to 24 years, 131 days
5. 1973 (Cardinals): 24 years, 313 days to 25 years, 131 days
6. 1974 (Red Sox): 25 years, 313 days to 26 years, 131 days
7. 1975 (Red Sox): 26 years, 313 days to 27 years, 131 days
8. 1976 (Red Sox): 27 years, 314 days to 28 years, 131 days
9. 1977 (Red Sox): 28 years, 313 days to 29 years, 131 days
10. 1978 (Rangers, Red Sox): 29 years, 313 days to 30 years, 131 days
11. 1979 (Brewers): 30 years, 313 days to 31 years, 131 days
12. 1980 (Brewers): 31 years, 314 days to 32 years, 131 days
13. 1981 (Brewers): 32 years, 313 days to 33 years, 131 days