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Championship Win Probability Added Calculator
Definition:
Championship Win Probability Added (cWPA) is a statistic in baseball that measures the change in Championship Win Probability from one plate appearance to the next. It credits or debits the player based on how much their action increased their team's chances of winning the championship.
What is the Championship Win Probability Added (cWPA) of a situation with a starting championship win probability of 0.5 and an ending championship win probability of 0.6?
Championship Win Probability Added

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What is a good cWPA?
In professional baseball, a cWPA over 0 is considered above average, and a cWPA over 1 is considered excellent.
Why is cWPA important?
cWPA is important because it measures a player's effectiveness in changing the championship win probability during their plate appearance, which is a primary goal of a player.
Who has the highest single-season cWPA?
Babe Ruth holds the record for the highest single-season cWPA at 11.9 in 1923.
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