ERA (Earned Run Average) Calculator
The ERA calculator helps baseball enthusiasts and statisticians compute a pitcher's average earned runs per nine innings pitched, providing insight into their performance on the field.
ERA Calculator
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Data Source and Methodology
Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da MLB official statistics. Learn more.
The Formula Explained
ERA = (Earned Runs / Innings Pitched) × 9Glossary of Variables
- Earned Runs: The number of runs scored without the benefit of an error or a passed ball.
- Innings Pitched: The number of innings a pitcher has completed pitching.
- ERA: The average number of earned runs a pitcher allows per nine innings pitched.
How It Works: A Step-by-Step Example
To calculate ERA, divide the number of earned runs allowed by the number of innings pitched, then multiply by 9. For instance, if a pitcher allows 30 earned runs in 90 innings, their ERA is (30/90) × 9 = 3.00.
Frequently Asked Questions (FAQ)
What is ERA?
ERA (Earned Run Average) is a statistic that measures a pitcher's effectiveness by calculating the average number of earned runs given up by the pitcher per nine innings pitched.
Why is ERA important?
ERA is crucial for evaluating a pitcher's performance and comparing it to others, helping coaches and managers make informed decisions.
How can I improve a pitcher's ERA?
Focusing on control, reducing walks, and improving pitch selection can help lower a pitcher's ERA.
What is a good ERA?
An ERA under 3.00 is considered excellent, while an ERA between 3.00 and 4.00 is above average.
Does ERA include unearned runs?
No, ERA only accounts for earned runs, excluding those resulting from fielding errors or passed balls.