Montreal Expos 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 Montreal Expos Players by ERA
Which Montreal Expos 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.


Montreal Expos ERA Per Season
Montreal Expos's ERA for each season of their history, plotted alongside yearly averages for MLB, the National League, and the National League East.

Montreal Expos ERA Season Distribution vs. MLB and Peers
Each box summarizes ERA across all seasons, comparing the Montreal Expos to MLB as a whole, the National League, and the National League East. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max values.

Montreal Expos ERA Year-Over-Year Change
A waterfall chart showing how the Montreal Expos's ERA shifted season over season. Each bar represents the change from the previous year, making it easy to spot peak and decline phases.

Montreal Expos ERA — Season-by-Season Breakdown
Every season of Montreal Expos's history with ERA alongside yearly averages for MLB, the National League, and the National League East. Career totals include sum, average, minimum, maximum, and median.
