Jerry Koosman
P · Born December 23, 1942
Age in each postseason series
- 1969 NLCS (October 4, 1969), Mets vs Braves 3–0: 26 years, 285 days
- 1969 World Series (October 11, 1969), Mets vs Orioles 4–1: 26 years, 292 days
- 1973 NLCS (October 6, 1973), Mets vs Reds 3–2: 30 years, 287 days
- 1973 World Series (October 13, 1973), Mets vs Athletics 3–4: 30 years, 294 days
- 1983 ALCS (October 5, 1983), White Sox vs Orioles 1–3: 40 years, 286 days
Age in each season
- 1967 (Mets): 24 years, 99 days to 24 years, 282 days
- 1968 (Mets): 25 years, 100 days to 25 years, 283 days
- 1969 (Mets): 26 years, 99 days to 26 years, 282 days
- 1970 (Mets): 27 years, 99 days to 27 years, 282 days
- 1971 (Mets): 28 years, 99 days to 28 years, 282 days
- 1972 (Mets): 29 years, 100 days to 29 years, 283 days
- 1973 (Mets): 30 years, 99 days to 30 years, 282 days
- 1974 (Mets): 31 years, 99 days to 31 years, 282 days
- 1975 (Mets): 32 years, 99 days to 32 years, 282 days
- 1976 (Mets): 33 years, 100 days to 33 years, 283 days
- 1977 (Mets): 34 years, 99 days to 34 years, 282 days
- 1978 (Mets): 35 years, 99 days to 35 years, 282 days
- 1979 (Twins): 36 years, 99 days to 36 years, 282 days
- 1980 (Twins): 37 years, 100 days to 37 years, 283 days
- 1981 (Twins, White Sox): 38 years, 99 days to 38 years, 282 days
- 1982 (White Sox): 39 years, 99 days to 39 years, 282 days
- 1983 (White Sox): 40 years, 99 days to 40 years, 282 days
- 1984 (Phillies): 41 years, 100 days to 41 years, 283 days
- 1985 (Phillies): 42 years, 99 days to 42 years, 282 days