Can you name the MLB All-Time Single-Season ERA+ leaders?
- Answers do not have to be guessed in order
- Source: Baseball Reference
- I have mercifully removed the 19th century pitchers from the Top 200 list. Grab a drink and good luck!
- This quiz has not been verified by Sporcle
MLB All-Time Single-Season ERA+ leaders Quiz
- Created Jan 22, 2010 in Sports
- Game Plays 341
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