Kansas City Athletics 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 Kansas City Athletics Players by ERA
Which Kansas City Athletics 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.
Kansas City Athletics ERA Per Season
Kansas City Athletics's ERA for each season of their history, plotted alongside yearly averages for MLB, the American League, and the American League.
Kansas City Athletics ERA Season Distribution vs. MLB and Peers
Each box summarizes ERA across all seasons, comparing the Kansas City Athletics to MLB as a whole, the American League, and the American 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.
Kansas City Athletics ERA Year-Over-Year Change
A waterfall chart showing how the Kansas City Athletics's ERA shifted season over season. Each bar represents the change from the previous year, making it easy to spot peak and decline phases.
Kansas City Athletics ERA — Season-by-Season Breakdown
Every season of Kansas City Athletics's history with ERA alongside yearly averages for MLB, the American League, and the American League. Career totals include sum, average, minimum, maximum, and median.