Cal Koonce
P · Born November 18, 1940
Age in each season
- 1962 (Cubs): 21 years, 134 days to 21 years, 317 days
- 1963 (Cubs): 22 years, 134 days to 22 years, 317 days
- 1964 (Cubs): 23 years, 135 days to 23 years, 318 days
- 1965 (Cubs): 24 years, 134 days to 24 years, 317 days
- 1966 (Cubs): 25 years, 134 days to 25 years, 317 days
- 1967 (Cubs, Mets): 26 years, 134 days to 26 years, 317 days
- 1968 (Mets): 27 years, 135 days to 27 years, 318 days
- 1969 (Mets): 28 years, 134 days to 28 years, 317 days
- 1970 (Red Sox, Mets): 29 years, 134 days to 29 years, 317 days
- 1971 (Red Sox): 30 years, 134 days to 30 years, 317 days