Mutt Williams career ERA
4.91Career Regular Season
Mutt Williams has a career ERA of 4.91 over 2 regular seasons.
- Best season on file: 4.50 in 1913.
- Most recent: 5.14 in 1914.
Average of 2 regular seasons, 1913 through 1914. Figures come from ESPN's box scores and were last read on November 1, 2026.