Hideo Nomo had the lowest ERA in a season in his first 20 games, with an ERA of 2.08 in his rookie season in 1995.
Interpreted as:
lowest era through first 20 starts by a player in a season| NAME | ERA | GS | SEASON | TM | G | W | L | W% | SO | CG | SHO | SV | IP | 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 |  | H. Nomo | 2.08 | 20 | 1995 | 20 | 10 | 3 | .769 | 175 | 4 | 3 | 0 | 143.0 | 85 | 33 | 39 | 10 | 59 | 5 | 0 | 2 | 579 | 13 | 11.01 | 3.71 | 2.97 | 0.63 | 30.2 | 10.2 | 1.01 | .227 | 2.45 | 5.35 | |
| 2 |  | P. Skenes | 2.10 | 20 | 2024 | 20 | 10 | 2 | .833 | 151 | 0 | 0 | 0 | 120.0 | 88 | 28 | 30 | 10 | 31 | 5 | 0 | 0 | 468 | 2 | 11.33 | 2.33 | 4.87 | 0.75 | 32.3 | 6.6 | 0.99 | .288 | 2.25 | 6.60 | |
| 3 | | R. Gale | 2.57 | 20 | 1978 | 20 | 12 | 3 | .800 | 65 | 9 | 3 | 0 | 136.2 | 112 | 39 | 45 | 6 | 69 | 2 | 0 | 2 | 570 | 3 | 4.28 | 4.54 | 0.94 | 0.40 | 11.4 | 12.1 | 1.32 | .248 | 2.96 | 7.38 | |
| 4 |  | M. Fulmer | 2.58 | 20 | 2016 | 20 | 10 | 4 | .714 | 104 | 1 | 1 | 0 | 125.2 | 100 | 36 | 39 | 12 | 33 | 6 | 0 | 1 | 502 | 1 | 7.45 | 2.36 | 3.15 | 0.86 | 20.7 | 6.6 | 1.06 | .254 | 2.79 | 7.16 | |
| 5 | | B. Ruffin | 2.62 | 20 | 1986 | 20 | 9 | 4 | .692 | 67 | 6 | 0 | 0 | 137.1 | 130 | 40 | 52 | 6 | 41 | 1 | 0 | 3 | 564 | 0 | 4.39 | 2.69 | 1.63 | 0.39 | 11.9 | 7.3 | 1.25 | .276 | 3.41 | 8.52 | |
| 6 | | G. Winter | 2.67 | 20 | 1901 | 20 | 12 | 8 | .600 | 41 | 18 | 1 | 0 | 172.0 | 177 | 51 | 94 | 2 | 49 | 4 | 0 | 2 | 2.15 | 2.56 | 0.84 | 0.10 | 7.3 | 1.31 | .304 | 4.92 | 9.26 | ||||
| 7 | | W. Simpson | 2.69 | 20 | 1970 | 20 | 13 | 1 | .929 | 98 | 9 | 2 | 0 | 147.1 | 99 | 44 | 54 | 13 | 65 | 6 | 0 | 2 | 601 | 5 | 5.99 | 3.97 | 1.51 | 0.79 | 16.3 | 10.8 | 1.11 | .205 | 3.30 | 6.05 | |
| 8 | | N. Hahn | 2.69 | 20 | 1901 | 20 | 12 | 7 | .632 | 126 | 19 | 0 | 0 | 174.0 | 184 | 52 | 75 | 6 | 30 | 7 | 0 | 4 | 6.52 | 1.55 | 4.20 | 0.31 | 4.1 | 1.23 | .314 | 3.88 | 9.52 | ||||
| 9 | | J. Fernandez | 2.71 | 20 | 2013 | 20 | 7 | 5 | .583 | 124 | 0 | 0 | 0 | 119.2 | 83 | 36 | 40 | 8 | 42 | 4 | 0 | 3 | 478 | 1 | 9.33 | 3.16 | 2.95 | 0.60 | 25.9 | 8.8 | 1.04 | .250 | 3.01 | 6.24 | |
| 10 | | M. Dunne | 2.74 | 20 | 1987 | 20 | 12 | 5 | .706 | 64 | 5 | 1 | 0 | 144.2 | 125 | 44 | 55 | 9 | 58 | 1 | 0 | 8 | 600 | 6 | 3.98 | 3.61 | 1.10 | 0.56 | 10.7 | 9.7 | 1.26 | .248 | 3.42 | 7.78 | |
| 11 | | M. Young | 2.75 | 20 | 1983 | 20 | 8 | 10 | .444 | 90 | 4 | 2 | 0 | 137.2 | 111 | 42 | 48 | 9 | 54 | 6 | 0 | 1 | 564 | 4 | 5.88 | 3.53 | 1.67 | 0.59 | 16.0 | 9.6 | 1.20 | .252 | 3.14 | 7.26 | |
| 12 |  | M. Tanaka | 2.77 | 20 | 2014 | 20 | 13 | 5 | .722 | 141 | 3 | 1 | 0 | 136.1 | 123 | 42 | 47 | 15 | 21 | 4 | 0 | 0 | 542 | 4 | 9.31 | 1.39 | 6.71 | 0.99 | 26.0 | 3.9 | 1.06 | .299 | 3.10 | 8.12 | |
| 13 | | D. Gooden | 2.80 | 20 | 1984 | 20 | 9 | 6 | .600 | 162 | 2 | 1 | 0 | 135.0 | 101 | 42 | 49 | 4 | 57 | 1 | 0 | 1 | 560 | 1 | 10.80 | 3.80 | 2.84 | 0.27 | 28.9 | 10.2 | 1.17 | .289 | 3.27 | 6.73 | |
| 14 | | D. Rozema | 2.84 | 20 | 1977 | 20 | 10 | 4 | .714 | 67 | 11 | 1 | 0 | 152.0 | 154 | 48 | 57 | 15 | 20 | 4 | 0 | 4 | 615 | 1 | 3.97 | 1.18 | 3.35 | 0.89 | 10.9 | 3.3 | 1.14 | .273 | 3.38 | 9.12 | |
| 15 | | R. Arrojo | 2.87 | 20 | 1998 | 20 | 11 | 6 | .647 | 101 | 2 | 2 | 0 | 134.2 | 119 | 43 | 45 | 10 | 31 | 12 | 0 | 1 | 546 | 2 | 6.75 | 2.07 | 3.26 | 0.67 | 18.5 | 5.7 | 1.11 | .278 | 3.01 | 7.95 | |
| 16 | | T. Hanson | 2.98 | 20 | 2009 | 20 | 11 | 4 | .733 | 107 | 0 | 0 | 0 | 120.2 | 100 | 40 | 41 | 10 | 44 | 5 | 0 | 1 | 495 | 2 | 7.98 | 3.28 | 2.43 | 0.75 | 21.6 | 8.9 | 1.19 | .274 | 3.06 | 7.46 | |
| 17 | | J. Taylor | 3.01 | 20 | 1901 | 20 | 8 | 12 | .400 | 42 | 19 | 0 | 0 | 170.2 | 200 | 57 | 103 | 3 | 27 | 5 | 0 | 0 | 2.21 | 1.42 | 1.56 | 0.16 | 3.7 | 1.33 | .304 | 5.43 | 10.55 | ||||
| 18 | | K. Wood | 3.01 | 20 | 1998 | 20 | 11 | 5 | .688 | 179 | 1 | 1 | 0 | 128.2 | 86 | 43 | 47 | 8 | 71 | 11 | 0 | 1 | 539 | 4 | 12.52 | 4.97 | 2.52 | 0.56 | 33.2 | 13.2 | 1.22 | .289 | 3.29 | 6.02 | |
| 19 | | T. Bibee | 3.01 | 20 | 2023 | 20 | 9 | 3 | .750 | 112 | 0 | 0 | 0 | 113.2 | 101 | 38 | 40 | 11 | 36 | 5 | 0 | 0 | 472 | 6 | 8.87 | 2.85 | 3.11 | 0.87 | 23.7 | 7.6 | 1.21 | .292 | 3.17 | 8.00 | |
| 20 |  | N. Cameron | 3.03 | 20 | 2025 | 20 | 7 | 6 | .538 | 88 | 0 | 0 | 0 | 113.0 | 92 | 38 | 38 | 14 | 36 | 3 | 0 | 1 | 460 | 3 | 7.01 | 2.87 | 2.44 | 1.12 | 19.1 | 7.8 | 1.13 | .245 | 3.03 | 7.33 | |
| 21 | | G. Hibbard | 3.08 | 20 | 1989 | 20 | 5 | 7 | .417 | 51 | 2 | 0 | 0 | 122.2 | 122 | 42 | 50 | 4 | 35 | 2 | 0 | 0 | 512 | 4 | 3.74 | 2.57 | 1.46 | 0.29 | 10.0 | 6.8 | 1.28 | .281 | 3.67 | 8.95 | |
| 22 |  | S. Imanaga | 3.09 | 20 | 2024 | 20 | 8 | 2 | .800 | 118 | 0 | 0 | 0 | 116.1 | 110 | 40 | 46 | 16 | 17 | 3 | 0 | 0 | 475 | 2 | 9.13 | 1.32 | 6.94 | 1.24 | 24.8 | 3.6 | 1.09 | .293 | 3.56 | 8.51 | |
| 23 | | J. Guzman | 3.13 | 20 | 1991 | 20 | 8 | 2 | .800 | 106 | 1 | 0 | 0 | 120.2 | 87 | 42 | 49 | 5 | 61 | 3 | 0 | 0 | 506 | 8 | 7.91 | 4.55 | 1.74 | 0.37 | 20.9 | 12.1 | 1.23 | .248 | 3.65 | 6.49 | |
| 24 |  | H. Jin Ryu | 3.14 | 20 | 2013 | 20 | 9 | 3 | .750 | 105 | 1 | 1 | 0 | 129.0 | 118 | 45 | 47 | 11 | 42 | 0 | 0 | 3 | 531 | 4 | 7.33 | 2.93 | 2.50 | 0.77 | 19.8 | 7.9 | 1.24 | .287 | 3.28 | 8.23 | |
| 25 |  | G. Kirby | 3.15 | 20 | 2022 | 20 | 6 | 3 | .667 | 109 | 0 | 0 | 0 | 105.2 | 110 | 37 | 41 | 12 | 14 | 5 | 0 | 0 | 440 | 3 | 9.28 | 1.19 | 7.79 | 1.02 | 24.8 | 3.2 | 1.17 | .327 | 3.49 | 9.37 | |
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SEAStatMuse has game-level data for ERA and starts going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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| TEAM | W | L | PCT | GB |
|---|---|---|---|---|
 Dodgers | 42 | 24 | .636 | |
34 | 31 | .523 | 7.5 | |
34 | 31 | .523 | 7.5 | |
27 | 40 | .403 | 15.5 | |
24 | 42 | .364 | 18.0 |
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
45 | 21 | .682 | ||
36 | 31 | .537 | 9.5 | |
34 | 33 | .507 | 11.5 | |
31 | 35 | .470 | 14.0 | |
29 | 37 | .439 | 16.0 | |
| NL Central | W | L | PCT | GB |
41 | 23 | .641 | ||
36 | 28 | .563 | 5.0 | |
34 | 32 | .515 | 8.0 | |
34 | 32 | .515 | 8.0 | |
31 | 34 | .477 | 10.5 | |
| NL West | W | L | PCT | GB |
42 | 24 | .636 | ||
34 | 31 | .523 | 7.5 | |
34 | 31 | .523 | 7.5 | |
27 | 40 | .403 | 15.5 | |
24 | 42 | .364 | 18.0 |
Phillies
Nationals
Marlins
Brewers
Cardinals| AL East | W | L | PCT | GB |
|---|---|---|---|---|
39 | 25 | .609 | ||
40 | 26 | .606 | ||
33 | 35 | .485 | 8.0 | |
31 | 36 | .463 | 9.5 | |
27 | 38 | .415 | 12.5 | |
| AL Central | W | L | PCT | GB |
37 | 32 | .536 | ||
34 | 31 | .523 | 1.0 | |
30 | 37 | .448 | 6.0 | |
27 | 39 | .409 | 8.5 | |
27 | 39 | .409 | 8.5 | |
| AL West | W | L | PCT | GB |
35 | 32 | .522 | ||
32 | 33 | .492 | 2.0 | |
31 | 35 | .470 | 3.5 | |
31 | 37 | .456 | 4.5 | |
25 | 42 | .373 | 10.0 |
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