About Runs Allowed Per 9 Innings

Runs allowed are the average number of runs given up by a pitcher or a team's pitchers over a nine inning period. Generally, for Runs Allowed Per 9 Innings, lower is better. (Source)

Top Chicago/Pittsburgh (Union League) Players by Runs Allowed Per 9 Innings

Which Chicago/Pittsburgh (Union League) players rank highest in Runs Allowed Per 9 Innings? Below are the top ten by single season and by career totals with the team, requiring at least 50 innings pitched for a season record, or 100 innings pitched for a career record with the team.
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Chicago/Pittsburgh (Union League) Runs Allowed Per 9 Innings Per Season

Chicago/Pittsburgh (Union League)'s Runs Allowed Per 9 Innings for each season of their history, plotted alongside yearly averages for MLB, the Union Association, and the Union Association.
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Chicago/Pittsburgh (Union League) Runs Allowed Per 9 Innings Season Distribution vs. MLB and Peers

Each box summarizes Runs Allowed Per 9 Innings across all seasons, comparing the Chicago/Pittsburgh (Union League) to MLB as a whole, the Union Association, and the Union Association. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max values.
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Chicago/Pittsburgh (Union League) Runs Allowed Per 9 Innings Year-Over-Year Change

A waterfall chart showing how the Chicago/Pittsburgh (Union League)'s Runs Allowed Per 9 Innings shifted season over season. Each bar represents the change from the previous year, making it easy to spot peak and decline phases.
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Chicago/Pittsburgh (Union League) Runs Allowed Per 9 Innings — Season-by-Season Breakdown

Every season of Chicago/Pittsburgh (Union League)'s history with Runs Allowed Per 9 Innings alongside yearly averages for MLB, the Union Association, and the Union Association. Career totals include sum, average, minimum, maximum, and median.
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