The line graph below shows daily WAA and Batting Average for reference. Fluctuation in batting average decreases as a season progresses. BA for pitchers is batting average against.
Note: Years before 1920 have a significant amount of missing unearned runs recorded in daily data. This can drastically impact daily pitcher WAA valuation which the line graph below depends upon. End of year UR in standings and end of year player WAA/Rank (above) is correct
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