John Connor career ERA
3.81Career Regular Season
John Connor has a career ERA of 3.81 over 2 regular seasons.
- Best season on file: 3.15 in 1884.
- Most recent: 4.70 in 1885.
Average of 2 regular seasons, 1884 through 1885. Figures come from ESPN's box scores and were last read on November 14, 2026.