ERA (Earned Run Average) RechnerEarned Runs*Innings Pitched*Berechnen ERA (Earned Run Average) ergibt 0 . ERA (Earned Run Average) BerechnungsmethodeERA (Earned Run Average) = Earned Runs × 9 ÷ Innings ERA (Earned Run Average)은 투수가 9회(1경기기준)를 던진다면 몇점으로 시합을 끝낼 수 있는지를 나타내는 수치 이다.
