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In baseball statistics, earned run average is the average of earned runs allowed by a pitcher per nine innings pitched. It is one of the most popular pitching statistics. It is identified by splitting the total number of earned runs offered by the number of innings pitched and multiplying by nine.

## What is Earned Run Average Calculation?

Earned runs can be multiplied by 7 for softball and 6 or 7 for little league games. It generally evaluates a player’s performance overall nine innings and also counts the time he has been pitching.

Therefore, earned Run Average determines the efficiency of a pitcher in a much more precise way than a simple win-to-loss ratio. But if any defensive wrongdoing takes place during the game, the player doesn’t gain any run, and it is not taken into account for ERA calculations.

### Purpose of the Earned Run Average Calculation:

- The calculation measures a pitcher’s effectiveness in Baseball.