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Base-Out Wins Added Calculator

Definition:

Base-Out Wins Added (WPA/LI) is a statistic in baseball that measures the change in Win Probability from one plate appearance to the next, adjusted for the leverage of the situation. It credits or debits the player based on how much their action increased their team's chances of winning.

The result is:
0

What is the Base-Out Wins Added (WPA/LI) of a player with a Win Probability Added of 0.1 and a leverage index of 1?

Base-Out Wins Added

Slo-Pitch Central
Result
0
Win Probability Added
0.1
Leverage Index
1
What is the Base-Out Wins Added (WPA/LI) of a player with a Win Probability Added of 0.1 and a leverage index of 1?
Generated at slopitchcentral.com

Formula Explanation:

The formula for calculating WPA/LI is: Win Probability Added / Leverage Index. This statistic measures the impact of each specific play in the context of the game situation, adjusted for the leverage of the situation.

Detailed Explanation:

WPA/LI is a measure of a player's effectiveness in changing the win probability during their plate appearance, adjusted for the leverage of the situation. This means that WPA/LI rewards players for making plays that increase their team's chances of winning.

Importance:

WPA/LI is an important statistic in baseball as it is a key component of many other statistics and is a primary measure of a player's effectiveness. A high WPA/LI means a player is contributing more to team wins, which gives their team a better chance to win.

Historical Use:

Base-Out Wins Added has been used as an official MLB statistic since the early days of professional baseball. It is a measure of a player's effectiveness.

Historical Context:

WPA/LI has been used in baseball since the 19th century and is a measure of a player's effectiveness.

Limitations:

While WPA/LI is a useful statistic, it is highly dependent on the context of the game, such as the score, inning, or importance of the game.

Example:

If a player's action increases the team's win probability by 0.1, and the leverage index for the situation is 1, their WPA/LI for that play would be 0.1.

Famous Examples:

Babe Ruth holds the record for the highest single-season WPA/LI at 11.9 in 1923.

Frequently Asked Questions:

What is a good WPA/LI?

In professional baseball, a WPA/LI over 0 is considered above average, and a WPA/LI over 1 is considered excellent.

Why is WPA/LI important?

WPA/LI is important because it measures a player's effectiveness in changing the win probability during their plate appearance, adjusted for the leverage of the situation, which is a primary goal of a player.

Who has the highest single-season WPA/LI?

Babe Ruth holds the record for the highest single-season WPA/LI at 11.9 in 1923.

Sources:

MLB

Major League Baseball explanation of Base-Out Wins Added (WPA/LI)

Read more →

Fangraphs

The Importance of WPA/LI

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