Madison Bumgarner has the best career ERA in the World Series when pitching at least 20 innings, with an ERA of 0.25.
| NAME | ERA | IP | SERIES | G | W | L | W% | GS | SO | CG | SHO | SV | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Bumgarner | 0.25 | 36.0 | World Series | 5 | 4 | 0 | 1.000 | 4 | 31 | 1 | 1 | 1 | 14 | 1 | 1 | 1 | 5 | 2 | 1 | 0 | 124 | 0 | 7.75 | 1.25 | 6.20 | 0.25 | 25.0 | 4.0 | 0.53 | .153 | 0.25 | 3.50 |
| 2 |  | J. Billingham | 0.36 | 25.1 | World Series | 7 | 2 | 0 | 1.000 | 3 | 19 | 0 | 0 | 1 | 14 | 1 | 3 | 0 | 9 | 1 | 2 | 1 | 98 | 0 | 6.75 | 3.20 | 2.11 | 0.00 | 19.4 | 9.2 | 0.91 | .203 | 1.07 | 4.97 |
| 3 | | H. Brecheen | 0.83 | 32.2 | World Series | 7 | 4 | 1 | .800 | 3 | 18 | 3 | 1 | 0 | 28 | 3 | 3 | 0 | 12 | 0 | 4 | 3 | 129 | 0 | 4.96 | 3.31 | 1.50 | 0.00 | 14.0 | 9.3 | 1.22 | .283 | 0.83 | 7.71 |
| 4 | | C. Osteen | 0.86 | 21.0 | World Series | 3 | 1 | 2 | .333 | 3 | 7 | 1 | 1 | 0 | 12 | 2 | 3 | 2 | 6 | 0 | 0 | 0 | 77 | 0 | 3.00 | 2.57 | 1.17 | 0.86 | 9.1 | 7.8 | 0.86 | .161 | 1.29 | 5.14 |
| 5 |  | B. Ruth | 0.87 | 31.0 | World Series | 3 | 3 | 0 | 1.000 | 3 | 8 | 2 | 1 | 0 | 19 | 3 | 3 | 1 | 10 | 1 | 0 | 0 | 116 | 1 | 2.32 | 2.90 | 0.80 | 0.29 | 6.9 | 8.6 | 0.94 | .188 | 0.87 | 5.52 |
| 6 | | S. Smith | 0.89 | 30.1 | World Series | 3 | 1 | 2 | .333 | 3 | 5 | 3 | 0 | 0 | 17 | 3 | 4 | 0 | 9 | 0 | 0 | 1 | 110 | 0 | 1.48 | 2.67 | 0.56 | 0.00 | 4.5 | 8.2 | 0.86 | .177 | 1.19 | 5.04 |
| 7 |  | S. Koufax | 0.95 | 57.0 | World Series | 8 | 4 | 3 | .571 | 7 | 61 | 4 | 2 | 0 | 36 | 6 | 10 | 2 | 11 | 0 | 0 | 1 | 213 | 0 | 9.63 | 1.74 | 5.55 | 0.32 | 28.6 | 5.2 | 0.82 | .245 | 1.58 | 5.68 |
| 8 | | C. Mathewson | 0.97 | 101.2 | World Series | 11 | 5 | 5 | .500 | 11 | 48 | 10 | 4 | 0 | 75 | 11 | 22 | 1 | 10 | 1 | 0 | 3 | 391 | 1 | 4.25 | 0.89 | 4.80 | 0.09 | 12.3 | 2.6 | 0.84 | .224 | 1.95 | 6.64 |
| 9 |  | M. Rivera | 0.99 | 36.1 | World Series | 24 | 2 | 1 | .667 | 0 | 32 | 0 | 0 | 11 | 27 | 4 | 5 | 1 | 8 | 2 | 19 | 1 | 144 | 0 | 7.93 | 1.98 | 4.00 | 0.25 | 22.2 | 5.6 | 0.96 | .257 | 1.24 | 6.69 |
| 10 | | H. Vaughn | 1.00 | 27.0 | World Series | 3 | 1 | 2 | .333 | 3 | 17 | 3 | 1 | 0 | 17 | 3 | 3 | 0 | 5 | 1 | 0 | 1 | 97 | 0 | 5.67 | 1.67 | 3.40 | 0.00 | 17.5 | 5.2 | 0.81 | .230 | 1.00 | 5.67 |
| 11 | | M. Pearson | 1.01 | 35.2 | World Series | 4 | 4 | 0 | 1.000 | 4 | 28 | 3 | 1 | 0 | 19 | 4 | 5 | 1 | 7 | 0 | 0 | 0 | 133 | 0 | 7.07 | 1.77 | 4.00 | 0.25 | 21.1 | 5.3 | 0.73 | .186 | 1.26 | 4.79 |
| 12 |  | Y. Yamamoto | 1.13 | 24.0 | World Series | 4 | 4 | 0 | 1.000 | 3 | 19 | 1 | 0 | 0 | 11 | 3 | 3 | 1 | 4 | 2 | 1 | 0 | 87 | 0 | 7.13 | 1.50 | 4.75 | 0.38 | 21.8 | 4.6 | 0.63 | .164 | 1.13 | 4.13 |
| 13 | | J. Beckett | 1.16 | 23.1 | World Series | 3 | 2 | 1 | .667 | 3 | 28 | 1 | 1 | 0 | 14 | 3 | 3 | 0 | 6 | 1 | 0 | 0 | 88 | 0 | 10.80 | 2.31 | 4.67 | 0.00 | 31.8 | 6.8 | 0.86 | .264 | 1.16 | 5.40 |
| 14 | | B. Adams | 1.29 | 28.0 | World Series | 4 | 3 | 0 | 1.000 | 3 | 11 | 3 | 1 | 0 | 20 | 4 | 5 | 2 | 6 | 1 | 1 | 0 | 111 | 0 | 3.54 | 1.93 | 1.83 | 0.64 | 9.9 | 5.4 | 0.93 | .198 | 1.61 | 6.43 |
| 15 | | E. Plank | 1.32 | 54.2 | World Series | 7 | 2 | 5 | .286 | 6 | 32 | 6 | 0 | 0 | 37 | 8 | 11 | 0 | 11 | 4 | 1 | 1 | 215 | 1 | 5.27 | 1.81 | 2.91 | 0.00 | 14.9 | 5.1 | 0.88 | .220 | 1.81 | 6.09 |
| 16 | | C. Carroll | 1.33 | 20.1 | World Series | 14 | 2 | 1 | .667 | 0 | 17 | 0 | 0 | 1 | 15 | 3 | 3 | 1 | 8 | 0 | 6 | 2 | 82 | 0 | 7.52 | 3.54 | 2.13 | 0.44 | 20.7 | 9.8 | 1.13 | .250 | 1.33 | 6.64 |
| 17 | | R. Fingers | 1.35 | 33.1 | World Series | 16 | 2 | 2 | .500 | 0 | 25 | 0 | 0 | 6 | 25 | 5 | 9 | 2 | 10 | 3 | 10 | 3 | 135 | 1 | 6.75 | 2.70 | 2.50 | 0.54 | 18.5 | 7.4 | 1.05 | .242 | 2.43 | 6.75 |
| 18 | | B. Hallahan | 1.36 | 39.2 | World Series | 7 | 3 | 1 | .750 | 5 | 27 | 3 | 2 | 1 | 29 | 6 | 6 | 0 | 23 | 1 | 1 | 1 | 172 | 1 | 6.13 | 5.22 | 1.17 | 0.00 | 15.7 | 13.4 | 1.31 | .240 | 1.36 | 6.58 |
| 19 | | J. Bouton | 1.48 | 24.1 | World Series | 3 | 2 | 1 | .667 | 3 | 11 | 1 | 0 | 0 | 19 | 4 | 5 | 0 | 10 | 0 | 0 | 1 | 100 | 2 | 4.07 | 3.70 | 1.10 | 0.00 | 11.0 | 10.0 | 1.19 | .241 | 1.85 | 7.03 |
| 20 | | M. Stanton | 1.54 | 23.1 | World Series | 20 | 3 | 0 | 1.000 | 0 | 20 | 0 | 0 | 1 | 14 | 4 | 4 | 0 | 5 | 0 | 8 | 4 | 84 | 0 | 7.71 | 1.93 | 4.00 | 0.00 | 23.8 | 6.0 | 0.81 | .237 | 1.54 | 5.40 |
| 21 | | O. Overall | 1.58 | 51.1 | World Series | 8 | 3 | 1 | .750 | 5 | 35 | 3 | 1 | 0 | 37 | 9 | 11 | 0 | 15 | 1 | 2 | 0 | 203 | 2 | 6.14 | 2.63 | 2.33 | 0.00 | 17.2 | 7.4 | 1.01 | .243 | 1.93 | 6.49 |
| 22 | | G. Earnshaw | 1.58 | 62.2 | World Series | 8 | 4 | 3 | .571 | 8 | 56 | 5 | 1 | 0 | 39 | 11 | 14 | 2 | 17 | 0 | 0 | 1 | 245 | 1 | 8.04 | 2.44 | 3.29 | 0.29 | 22.9 | 6.9 | 0.89 | .218 | 2.01 | 5.60 |
| 23 | | S. Chandler | 1.62 | 33.1 | World Series | 6 | 2 | 2 | .500 | 4 | 16 | 2 | 1 | 1 | 28 | 6 | 8 | 0 | 9 | 0 | 1 | 0 | 133 | 0 | 4.32 | 2.43 | 1.78 | 0.00 | 12.0 | 6.8 | 1.11 | .259 | 2.16 | 7.56 |
| 24 | | M. Lolich | 1.67 | 27.0 | World Series | 3 | 3 | 0 | 1.000 | 3 | 21 | 3 | 0 | 0 | 20 | 5 | 5 | 2 | 6 | 1 | 0 | 0 | 104 | 0 | 7.00 | 2.00 | 3.50 | 0.67 | 20.2 | 5.8 | 0.96 | .243 | 1.67 | 6.67 |
| 25 | | J. Haines | 1.67 | 32.1 | World Series | 6 | 3 | 1 | .750 | 4 | 12 | 2 | 1 | 0 | 24 | 6 | 9 | 3 | 16 | 0 | 1 | 1 | 133 | 1 | 3.34 | 4.45 | 0.75 | 0.84 | 9.0 | 12.0 | 1.24 | .206 | 2.51 | 6.68 |
StatMuse has game-level data for ERA and innings pitched going back to the 1903 playoffs.
Some of the information used here was obtained free of charge from Retrosheet.
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