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ERA+ takes a player's earned run average (ERA) and normalizes it across the entire league. It accounts for external factors like ballparks and opponents. A score of 100 is league average, and 150 is 50 percent better than the league average.
Adjusted ERA+ (ERA+) is a statistic in baseball that adjusts a pitcher's earned run average (ERA) to account for the effects of the ballpark they pitch in and the league average ERA.
Win Expectancy, Run Expectancy, and Leverage Index calculations provided by Tom Tango of InsideTheBook.com, and co-author of The Book: Playing the Percentages in Baseball. Total Zone Rating and initial framework for Wins above Replacement calculations provided by Sean Smith.
ERA+ takes a player's ERA and normalizes it across the entire league. It accounts for external factors like ballparks and opponents. It then adjusts, so a score of 100 is league average, and 150 is 50 percent better than the league average.
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Win Expectancy, Run Expectancy, and Leverage Index calculations provided by Tom Tango of InsideTheBook.com, and co-author of The Book: Playing the Percentages in Baseball. Total Zone Rating and initial framework for Wins above Replacement calculations provided by Sean Smith.
Adjusted ERA+, often simply abbreviated to ERA+ or ERA plus, is a pitching statistic in baseball. It adjusts a pitcher's earned run average (ERA) according to the pitcher's ballpark (in case the ballpark favors batters or pitchers) and the ERA of the pitcher's league.
