Jeff Pfeffer
P · Born March 4, 1888
Age in each postseason series
- 1916 World Series (October 7, 1916), Robins vs Red Sox 1–4: 28 years, 217 days
- 1920 World Series (October 5, 1920), Robins vs Indians 2–5: 32 years, 215 days
Age in each season
- 1911 (Browns): 23 years, 28 days to 23 years, 211 days
- 1913 (Superbas): 25 years, 28 days to 25 years, 211 days
- 1914 (Robins): 26 years, 28 days to 26 years, 211 days
- 1915 (Robins): 27 years, 28 days to 27 years, 211 days
- 1916 (Robins): 28 years, 28 days to 28 years, 211 days
- 1917 (Robins): 29 years, 28 days to 29 years, 211 days
- 1918 (Robins): 30 years, 28 days to 30 years, 211 days
- 1919 (Robins): 31 years, 28 days to 31 years, 211 days
- 1920 (Robins): 32 years, 28 days to 32 years, 211 days
- 1921 (Cardinals, Robins): 33 years, 28 days to 33 years, 211 days
- 1922 (Cardinals): 34 years, 28 days to 34 years, 211 days
- 1923 (Cardinals): 35 years, 28 days to 35 years, 211 days
- 1924 (Cardinals, Pirates): 36 years, 28 days to 36 years, 211 days