Jack O'Connor
C · Born June 2, 1866
Age in each season
- 1887 (Red Stockings): 20 years, 303 days to 21 years, 121 days
- 1888 (Red Stockings): 21 years, 304 days to 22 years, 121 days
- 1889 (Solons): 22 years, 303 days to 23 years, 121 days
- 1890 (Solons): 23 years, 303 days to 24 years, 121 days
- 1891 (Solons): 24 years, 303 days to 25 years, 121 days
- 1892 (Spiders): 25 years, 304 days to 26 years, 121 days
- 1893 (Spiders): 26 years, 303 days to 27 years, 121 days
- 1894 (Spiders): 27 years, 303 days to 28 years, 121 days
- 1895 (Spiders): 28 years, 303 days to 29 years, 121 days
- 1896 (Spiders): 29 years, 304 days to 30 years, 121 days
- 1897 (Spiders): 30 years, 303 days to 31 years, 121 days
- 1898 (Spiders): 31 years, 303 days to 32 years, 121 days
- 1899 (Perfectos): 32 years, 303 days to 33 years, 121 days
- 1900 (Pirates, Cardinals): 33 years, 303 days to 34 years, 121 days
- 1901 (Pirates): 34 years, 303 days to 35 years, 121 days
- 1902 (Pirates): 35 years, 303 days to 36 years, 121 days
- 1903 (Highlanders): 36 years, 303 days to 37 years, 121 days
- 1904 (Browns): 37 years, 304 days to 38 years, 121 days
- 1906 (Browns): 39 years, 303 days to 40 years, 121 days
- 1907 (Browns): 40 years, 303 days to 41 years, 121 days
- 1910 (Browns): 43 years, 303 days to 44 years, 121 days