In baseball statistics, earned run average (ERA) is the average of earned runs allowed by a pitcher per nine innings pitched (i.e. the traditional length of a game).

Earned run average represents the number of earned runs a pitcher allows per nine innings -- with earned runs being any runs that scored without the aid of an error or a passed ball. ERA is the most commonly accepted statistical tool for evaluating pitchers. The formula for finding ERA is: 9 x earned runs / innings pitched.

The ERA Calculator is used to calculate the ERA (earned run average) used in baseball statistics. What is ERA? In baseball statistics, Earned Run Average, or ERA, is one of the most well-known pitching statistics and represents the average number of earned runs a pitcher will give up per nine-inning game.

Dec 24, 2024 · ERA (Earned Run Average) is the average number of earned runs a pitcher has allowed per every 9 innings he pitches. This is one of the most useful calculations in baseball, as it shows the pitcher's overall effectiveness.

May 24, 2023 · ERA is a baseball acronym that stands for Earned Run Average. It is a metric that measures the number of earned runs a pitcher allows per nine innings pitched. ERA works by factoring in the number of innings pitched and the total …

Jan 4, 2025 · Earned run average (ERA) is a statistic used in baseball to measure the effectiveness of a pitcher. It is calculated by dividing the number of earned runs allowed by the pitcher by the number of innings pitched, multiplied by 9. This article will provide you with a step-by-step guide on how to calculate ERA, including examples to help you understand the process.

Earned runs is the key counting statistic used in ERA, the most widely accepted barometer of a pitcher's success. If there are no errors or passed balls in a given inning or game, all the runs in that inning or game are earned runs.

Feb 16, 2010 · Earned Run Average (ERA) is a rudimentary metric designed to assess how well a pitcher has prevented runs in the past. Given that a pitcher’s job is to aid in the prevention of run scoring, ERA...

May 22, 2023 · Earned Run Average, or ERA, lies at the heart of evaluating a pitcher's effectiveness in a baseball game. Developed by English-American sportswriter and statistician Henry Chadwick, ERA measures the number of earned runs allowed per nine innings pitched.

May 15, 2022 · A pitcher's Earned Run Average (aka ERA) is a primary measure of his success. It is similar, but not identical to, run average. It is expressed as an average number of opponents' earned runs scored per notional nine inning game: ERA = (Earned Runs Allowed * 9) / …