Earned run average ERA
ERA stands for earned run average. Earned runs a pitcher allows per nine innings — the standard measure of run prevention.
How ERA is calculated
Jacob Misiorowski, 2026: 9 × 35 ÷ 174⅔ = 1.80
Only earned runs count. A run that scored solely because of an error is unearned and vanishes from ERA, which means an official scorer’s judgement on one play changes a pitcher’s headline number.
ERA calculator
That would lead the 141 qualified players of 2026. The median was 3.92.
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What counts as a good ERA?
Half of the 141 qualified MLB players in 2026 were at or below 3.92. The best tenth were under 2.86.
- Median
- 3.92
- Top 10% (low)
- 2.86
- Leader
- 1.80
Qualified: 100+ IP, non-zero, 2026 regular season.