Batting Average Against Formula:
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Batting Average Against (BAA) is a statistic in baseball that measures how often a pitcher allows hits to batters. It's calculated by dividing the number of hits allowed by the number of at bats against the pitcher.
The calculator uses the simple formula:
Where:
Explanation: The result is typically expressed as a decimal rounded to three places (e.g., 0.250).
Details: BAA is a key metric for evaluating pitcher performance. Lower values indicate better performance, with elite pitchers typically maintaining BAAs below .220.
Tips: Enter the total hits allowed and total at bats against the pitcher. Both values must be non-negative, and hits cannot exceed at bats.
Q1: What's considered a good Batting Average Against?
A: Below .220 is excellent, .220-.250 is good, .250-.275 is average, and above .275 is poor for most pitchers.
Q2: How does BAA differ from opponent batting average?
A: They're essentially the same statistic, though BAA is specifically from the pitcher's perspective.
Q3: Does BAA include walks?
A: No, BAA only considers official at bats (which exclude walks, sacrifices, and hit-by-pitches).
Q4: What's the difference between BAA and ERA?
A: BAA measures frequency of hits allowed, while ERA measures runs allowed per 9 innings.
Q5: Can BAA be greater than 1.000?
A: No, since hits cannot exceed at bats in the calculation.