Calculateur d'ERA au Baseball — Formule
## Earned Run Average (ERA)
ERA is the average number of earned runs a pitcher allows per nine innings. It is the most traditional measure of pitching effectiveness.
### Formula
**ERA = (Earned Runs / Innings Pitched) x 9**
Only earned runs count (errors by fielders are excluded). A lower ERA is better. In modern MLB, an ERA below 3.00 is excellent, 3.00-4.00 is above average, and above 5.00 is poor.
ERA is the average number of earned runs a pitcher allows per nine innings. It is the most traditional measure of pitching effectiveness.
### Formula
**ERA = (Earned Runs / Innings Pitched) x 9**
Only earned runs count (errors by fielders are excluded). A lower ERA is better. In modern MLB, an ERA below 3.00 is excellent, 3.00-4.00 is above average, and above 5.00 is poor.
Exemple Résolu
A pitcher allows 35 earned runs in 100 innings.
- ERA = (35 / 100) x 9 = 0.35 x 9 = 3.15
- This is an above-average ERA in modern baseball