Pittsburgh Keystones ERA Charts and Records
About ERA
Earned run average (ERA) is a metric that shows how many earned runs on average, a pitcher or team's pitcher, gives up over the course of nine innings. It is calculated by dividing earned runs by innings pitched then multiplying the result by 9. Generally, for ERA, lower is better. (Source)
Top Pittsburgh Keystones Players by ERA
Which Pittsburgh Keystones players rank highest in ERA? 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.
Pittsburgh Keystones ERA Per Season
Pittsburgh Keystones's ERA for each season of their history, plotted alongside yearly averages for MLB, the Negro National League, and the Negro National League.
Pittsburgh Keystones ERA Season Distribution vs. MLB and Peers
Each box summarizes ERA across all seasons, comparing the Pittsburgh Keystones to MLB as a whole, the Negro National League, and the Negro National League. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max values.
Pittsburgh Keystones ERA Year-Over-Year Change
A waterfall chart showing how the Pittsburgh Keystones's ERA shifted season over season. Each bar represents the change from the previous year, making it easy to spot peak and decline phases.
Pittsburgh Keystones ERA — Season-by-Season Breakdown
Every season of Pittsburgh Keystones's history with ERA alongside yearly averages for MLB, the Negro National League, and the Negro National League. Career totals include sum, average, minimum, maximum, and median.