ERA (Earned Run Average)
The average number of earned runs a pitcher allows per nine innings. An ERA under 3.00 is elite; league average is around 4.00.
Why "ERA" Matters
Understanding era helps you follow stats situations during a baseball game. Pair this with our rules guide, positions overview, and the full baseball glossary.
Related Stats Terms
- Batting Average (AVG)
Hits divided by at-bats. A .300 batting average is considered excellent; the league average hovers around .250. - Box Score
A statistical summary of a game that includes each player's performance, runs scored by inning, and pitching lines. - Exit Velocity
The speed of the ball as it comes off the bat, measured in mph. A key metric in modern analytics; 95+ mph is considered - K (Strikeout)
When a batter accumulates three strikes. A forward "K" means a swinging strikeout; a backward "Ꝁ" means called (looking)