Quote:
Originally Posted by frankbmd
Deadball pitchers benefitted from their fielders lousy gloves. Lousy gloves create errors. Errors create unearned runs. Unearned runs create create lower ERAs.
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To your point: 25.2% of all runs allowed by Walter Johnson were unearned. 8.4% of runs allowed by Clayton Kershaw have been unearned. So Johnson had 3x as many unearned. At 8.4%, Johnson would have an ERA of 2.65 - still great but far higher. Kershaw at 25.2% would have an ERA of 2.03 - 5th all-time despite playing in a live ball era.