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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). It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine.
ERA stands for earned run average, a statistic that measures how many runs a pitcher allows per nine innings. Learn how to calculate ERA, what factors affect it and why it is not a perfect evaluation tool.
- What Is Era Stands for?
- What Are Earned and Unearned runs?
- When Did The Era Come Into Major League Baseball History?
- How to Calculate Era in A Nine Innings Pitched game?
- What Is A Good Era?
- All-Time Lowest Career Era Leader
- How Era Varies by Role and League
- Impact of Ballparks on Era
- Good Era in High School Baseball Games
- Quick Notes
As I mentioned before, ERA stands for Earned Run Average. Earned Run Average era is the most significant state of a pitcher. It shows how a pitcher is good or bad. However, all runs scored are not earned runs. as a result, all runs also don’t go against the ERA of the pitchers. Runs could be unearned when they come from a defensive error, fielding ...
Earned Run
In simple words, earned run is a run that a batting or offensive team earns through right fielding. Any fielding error, defensive error, or passed ball involved in a run will not be considered an earned run. So, the earned runs scored will affect the pitcher’s ERA calculation. Any run that is assisted by a fielding error, passed ball, or defensive error will not be counted as an earned run. But, there are also ranges of ERA that are defined with different terms as well. We will discuss them i...
Unearned Runs
If I am not wrong, I can expect you have already understood the definition of unearned runs. It is actually the opposite of earned runs. Any run that comes from any fielding error, defensive error, or passed ball is called an unearned run. The main purpose of determining the unearned run is to determine which one is the pitcher’s fault and which one is not. MLB rules show the pitcher will not be punished with the unearned runs for his state. As a result, this will also not go against the pitc...
Before the ERA came into the baseball game, the pitcher’s won-loss record was the only entity to determine the pitcher’s effectiveness. It was the time prior to the 1900s and by that time, the pitchers needed to pitch in a full game. By the way, as a result, the first tabulated official earned run average era calculation was taken into account by N...
I hope we have a clear and concise idea about what ERA is by this time. So, it’s time to learn how to calculate these defense-independent pitching statistics for major league pitchers. By the way, the ERA calculation has a concise method for the national league pitchers. For example, if a pitcher pitches 50 innings in a season and gives up 20 runs,...
A good ERA depends on several factors. Among them, starting pitchers and relief pitchers are the two most significant terms that differ the ERA whether good or bad. You cannot judge relief pitchers solely with the ERA stat that they should have for a starting pitcher. Conversely, the opposite is the right too. So, the career ERA that is determined ...
Some players somehow get the top places, whatever, hitting or pitching. Okay, now we have a list of players with the lowest ERA. When these pitchers play, they always affect the batting average The following table shows the 5 all-time top ERA leaders in MLB history.
The meaning of a “good” ERA can vary based on the pitcher’s role and league dynamics. Different leagues and roles create distinct expectations for pitchers: 1. Starting pitchers: These pitchers throw many innings per game. A competitive ERA for them is generally around 3.50 to 4.00. 2. Relief pitchers: Relievers pitch fewer innings but in critical ...
Not all ballparks are created equal when it comes to influencing ERA. Some are pitcher-friendly, where fewer home runs and hits occur, helping pitchers maintain lower ERAs. Others are hitter-friendly, increasing the likelihood of runs and making it harder for pitchers to keep their ERA low. 1. Pitcher-friendly parks: 1.1. Dodger Stadium (Los Angele...
In the high school baseball lineup, the hitters get fewer hits than in collegiate baseball and Major league Baseball. So, you should remember that the high school level hitters will get less depth in their batting. So, it is expected that the high school pitcher will get good ERA than in professional leagues. By the way, there is no standard for co...
Single Season Lowest ERA
According to Baseball Reference, the lowest career era in a single season is held by Robert Keyes, which was 0.64 in 1944. It is based on the player who at least one innings pitched. On the other hand, for players with two hundred innings pitched, the lowest ERA in a single season was 0.96 by Dutch Leonard in 1914. Bob Gibson holds the lowest ERA record of 1.12 in a single season among the players who pitched a minimum of 300 innings (Live ball ERA). St. Louis Cardinal’s pitcher did this in 1...
All-Time ERA Leader
Ed Walsh is the all-time best ERA holder. His career ERA is 1.82. He did it between 1904 to 1917. By the way, players are considered all-time leaders who pitched a minimum of 1000 innings in their career. On the other hand, as an active pitcher, Clayton Kershaw is currently holding the ERA leadership. He has a 2.44 ERA. And Mariano Rivera is the live ball era leader with an ERA of 2.21. He did this in his career between 1995 to2013.
The Highest ERA Holder (!) in a Single Season
Not a comfortable state for the pitcher at all. The highest (worst actually!) ERA holder for all-time in a single season is Les Sweetland of the Philadelphia Phillies. He got the worst ERA at 7.71 in the 1930 season. Because of the state of this qualified pitcher, the Phillies set the worst ERA as a team as well in that year. They finished the season with a 6.70 team ERA.
Sep 3, 2024 · ERA stands for Earned Run Average. In simple terms, ERA measures how many earned runs a pitcher allows on average for every nine innings pitched. An earned run is a run that results from the actions of the offensive team, without the help of errors or mistakes made by the defense.
Apr 19, 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.
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Mar 28, 2024 · ERA, which stands for Earned Run Average, is a crucial measure for gauging a pitcher’s performance in baseball, highlighting how ERA work in the sport. It calculates the average earned runs a pitcher permits over the course of nine innings, providing a straightforward measure of their performance.
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Sep 14, 2023 · ERA, or Earned Run Average, is a fundamental metric in baseball, providing valuable insights into a pitcher’s effectiveness on the mound. It’s a statistic that has been part of the game’s fabric for over a century, shaping the way we understand and analyze pitchers’ performances.
