Earned run average
(Redirected from Earned Runs Allowed)
A pitcher's Earned Run Average (aka ERA) is a primary measure of his success. It is similar, but not identical to, run average. It is expressed as an average number of opponents' earned runs scored per notional nine inning game:
- ERA = (Earned Runs Allowed * 9) / Innings Pitched
All Time Leaders | |||
---|---|---|---|
Span | Player | Total | Notes |
Career | Ed Walsh | 1.82 | |
Season | Tim Keefe | 0.86 | 1880 |
Season (since 1920) | Bob Gibson | 1.12 | 1968 |
NPB Career | Hideo Fujimoto | 1.90 | |
NPB Season | Hideo Fujimoto | 0.73 | 1943 |
KBO Career | Dong-yol Sun | 1.20 | |
Cuban Career | José Antonio Huelga | 1.50 | Post-Revolution |
AAGPBL Career | Jean Faut | 1.23 | |
AAGPBL Season | Lois Florreich | 0.67 | 1949 |
MLB Career minimum 1000 innings |
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