Since 1965, 49 pitchers are tied for the highest win percentage by a rookie with an ERA worse than 0.00, at 1.000. The first three are Enmanuel De Jesús, Jake Eder and PJ Poulin this season.
| NAME | W% | ERA | SEASON | TM | W | L | G | GS | 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 | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | E. De Jesús | 1.000 | 4.25 | 2026 | 2 | 0 | 21 | 0 | 29 | 0 | 0 | 1 | 29.2 | 27 | 14 | 17 | 1 | 12 | 0 | 10 | 0 | 127 | 0 | 8.80 | 3.64 | 2.42 | 0.30 | 22.8 | 9.4 | 1.31 | .306 | 5.16 | 101 | 2.79 | 67 | 8.19 | 4.6 | |
| 2 | | J. Eder | 1.000 | 2.25 | 2026 | 1 | 0 | 4 | 0 | 1 | 0 | 0 | 0 | 4.0 | 3 | 1 | 1 | 0 | 1 | 0 | 4 | 0 | 15 | 0 | 2.25 | 2.25 | 1.00 | 0.00 | 6.7 | 6.7 | 1.00 | .231 | 2.25 | 55 | 3.35 | 78 | 6.75 | 0.4 | |
| 3 | | PJ Poulin | 1.000 | 2.84 | 2026 | 3 | 0 | 31 | 10 | 21 | 0 | 0 | 2 | 31.2 | 24 | 10 | 11 | 4 | 18 | 1 | 4 | 1 | 133 | 1 | 5.97 | 5.12 | 1.17 | 1.14 | 15.8 | 13.5 | 1.33 | .225 | 3.13 | 68 | 5.21 | 125 | 6.82 | -3.6 | |
| 4 | | E. Sisk | 1.000 | 1.80 | 2026 | 1 | 0 | 30 | 0 | 42 | 0 | 0 | 0 | 35.0 | 28 | 7 | 7 | 2 | 12 | 5 | 5 | 0 | 144 | 1 | 10.80 | 3.09 | 3.50 | 0.51 | 29.2 | 8.3 | 1.14 | .313 | 1.80 | 42 | 2.90 | 69 | 7.20 | 5 | |
| 5 | | S. Johnson | 1.000 | 6.75 | 2026 | 1 | 0 | 6 | 0 | 6 | 0 | 0 | 0 | 6.2 | 8 | 5 | 7 | 1 | 3 | 1 | 2 | 0 | 33 | 0 | 8.10 | 4.05 | 2.00 | 1.35 | 18.2 | 9.1 | 1.65 | .318 | 9.45 | 160 | 5.05 | 118 | 10.80 | -0.6 | |
| 6 | | A. Macko | 1.000 | 1.50 | 2026 | 2 | 0 | 12 | 1 | 12 | 0 | 0 | 0 | 12.0 | 11 | 2 | 2 | 1 | 2 | 1 | 0 | 0 | 48 | 0 | 9.00 | 1.50 | 6.00 | 0.75 | 25.0 | 4.2 | 1.08 | .313 | 1.50 | 36 | 2.93 | 69 | 8.25 | 1.7 | |
| 7 | | C. Laweryson | 1.000 | 5.06 | 2026 | 1 | 0 | 14 | 0 | 18 | 0 | 0 | 1 | 16.0 | 13 | 9 | 10 | 3 | 7 | 2 | 7 | 0 | 72 | 0 | 10.13 | 3.94 | 2.57 | 1.69 | 25.0 | 9.7 | 1.25 | .238 | 5.63 | 119 | 4.97 | 119 | 7.31 | -1.4 | |
| 8 | | T. Rashi | 1.000 | 9.82 | 2026 | 1 | 0 | 3 | 0 | 4 | 0 | 0 | 0 | 3.2 | 3 | 4 | 4 | 1 | 1 | 0 | 2 | 0 | 15 | 0 | 9.82 | 2.45 | 4.00 | 2.45 | 26.7 | 6.7 | 1.09 | .222 | 9.82 | 233 | 5.28 | 130 | 7.36 | -0.5 | |
| 9 | | C. Phillips | 1.000 | 5.53 | 2026 | 1 | 0 | 25 | 0 | 28 | 0 | 0 | 1 | 27.2 | 21 | 17 | 18 | 3 | 28 | 3 | 6 | 0 | 133 | 1 | 9.11 | 9.11 | 1.00 | 0.98 | 21.1 | 21.1 | 1.77 | .254 | 5.86 | 126 | 5.84 | 133 | 6.83 | -4.2 | |
| 10 | | C. Scott | 1.000 | 3.10 | 2026 | 2 | 0 | 9 | 9 | 47 | 0 | 0 | 0 | 40.2 | 36 | 14 | 15 | 4 | 19 | 5 | 0 | 0 | 178 | 0 | 10.40 | 4.20 | 2.47 | 0.89 | 26.4 | 10.7 | 1.35 | .311 | 3.32 | 77 | 3.83 | 93 | 7.97 | 1.4 | |
| 11 | | T. Adams | 1.000 | 6.75 | 2026 | 1 | 0 | 14 | 0 | 28 | 0 | 0 | 2 | 20.0 | 21 | 15 | 15 | 4 | 9 | 0 | 5 | 0 | 90 | 1 | 12.60 | 4.05 | 3.11 | 1.80 | 31.1 | 10.0 | 1.50 | .347 | 6.75 | 159 | 4.25 | 102 | 9.45 | -0.1 | |
| 12 | | A. Alvarez | 1.000 | 3.34 | 2026 | 1 | 0 | 9 | 4 | 37 | 0 | 0 | 1 | 32.1 | 33 | 12 | 12 | 2 | 12 | 0 | 2 | 0 | 137 | 1 | 10.30 | 3.34 | 3.08 | 0.56 | 27.0 | 8.8 | 1.39 | .360 | 3.34 | 80 | 2.73 | 65 | 9.19 | 5.2 | |
| 13 | | A. Hoffmann | 1.000 | 7.71 | 2026 | 1 | 0 | 8 | 0 | 12 | 0 | 0 | 0 | 11.2 | 16 | 10 | 12 | 3 | 8 | 1 | 3 | 0 | 59 | 0 | 9.26 | 6.17 | 1.50 | 2.31 | 20.3 | 13.6 | 2.06 | .371 | 9.26 | 183 | 6.70 | 165 | 12.34 | -3.5 | |
| 14 | | C. Whisenhunt | 1.000 | 3.60 | 2026 | 1 | 0 | 1 | 1 | 2 | 0 | 0 | 0 | 5.0 | 6 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 23 | 1 | 3.60 | 3.60 | 1.00 | 0.00 | 8.7 | 8.7 | 1.60 | .316 | 3.60 | 89 | 3.50 | 87 | 10.80 | 0.3 | |
| 15 | | M. Barnett | 1.000 | 1.23 | 2026 | 1 | 0 | 8 | 0 | 19 | 0 | 0 | 2 | 14.2 | 7 | 2 | 2 | 1 | 7 | 0 | 4 | 1 | 57 | 0 | 11.66 | 4.30 | 2.71 | 0.61 | 33.3 | 12.3 | 0.95 | .200 | 1.23 | 28 | 2.82 | 66 | 4.30 | 2.3 | |
| 16 | | E. Henriquez | 1.000 | 2.93 | 2026 | 2 | 0 | 29 | 0 | 32 | 0 | 0 | 0 | 30.2 | 20 | 10 | 12 | 1 | 10 | 3 | 3 | 0 | 121 | 0 | 9.39 | 2.93 | 3.20 | 0.29 | 26.4 | 8.3 | 0.98 | .253 | 3.52 | 71 | 2.71 | 63 | 5.87 | 5.3 | |
| 17 | | B. Castaño | 1.000 | 3.92 | 2026 | 1 | 0 | 10 | 0 | 17 | 0 | 0 | 0 | 20.2 | 22 | 9 | 9 | 4 | 6 | 2 | 2 | 0 | 85 | 0 | 7.40 | 2.61 | 2.83 | 1.74 | 20.0 | 7.1 | 1.35 | .321 | 3.92 | 83 | 5.13 | 117 | 9.58 | -1.6 | |
| 18 | | L. VanWey | 1.000 | 1.50 | 2026 | 1 | 0 | 5 | 0 | 5 | 0 | 0 | 0 | 6.0 | 5 | 1 | 2 | 0 | 0 | 0 | 5 | 0 | 22 | 0 | 7.50 | 0.00 | 0.00 | 22.7 | 0.0 | 0.83 | .294 | 3.00 | 36 | 1.43 | 34 | 7.50 | 1.8 | ||
| 19 | | D. Fuentes | 1.000 | 2.35 | 2026 | 4 | 0 | 23 | 1 | 35 | 0 | 0 | 1 | 30.2 | 22 | 8 | 8 | 1 | 10 | 2 | 4 | 0 | 124 | 0 | 10.27 | 2.93 | 3.50 | 0.29 | 28.2 | 8.1 | 1.04 | .276 | 2.35 | 56 | 2.41 | 59 | 6.46 | 5.8 | |
| 20 | | K. Rojas | 1.000 | 1.65 | 2026 | 1 | 0 | 6 | 2 | 18 | 0 | 0 | 0 | 16.1 | 12 | 3 | 3 | 0 | 13 | 1 | 1 | 0 | 71 | 1 | 9.92 | 7.16 | 1.38 | 0.00 | 25.4 | 18.3 | 1.53 | .308 | 1.65 | 39 | 3.46 | 83 | 6.61 | 1.3 | |
| 21 | | P. Gray | 1.000 | 3.42 | 2026 | 2 | 0 | 20 | 0 | 28 | 0 | 0 | 0 | 26.1 | 21 | 10 | 14 | 3 | 7 | 2 | 4 | 1 | 112 | 1 | 9.57 | 2.39 | 4.00 | 1.03 | 25.0 | 6.3 | 1.06 | .250 | 4.78 | 82 | 3.48 | 82 | 7.18 | 2.2 | |
| 22 | | R. Ahlstrom | 1.000 | 0.96 | 2026 | 2 | 0 | 9 | 0 | 6 | 0 | 0 | 0 | 9.1 | 6 | 1 | 1 | 0 | 3 | 0 | 3 | 0 | 35 | 0 | 5.79 | 2.89 | 2.00 | 0.00 | 17.1 | 8.6 | 0.96 | .231 | 0.96 | 23 | 2.78 | 66 | 5.79 | 1.5 | |
| 23 | | C. Dallas | 1.000 | 2.45 | 2026 | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 3.2 | 2 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 15 | 1 | 4.91 | 4.91 | 1.00 | 0.00 | 13.3 | 13.3 | 1.09 | .182 | 2.45 | 59 | 3.64 | 86 | 4.91 | 0.2 | |
| 24 | | S. Blewett | 1.000 | 5.48 | 2025 | TOT | 3 | 0 | 26 | 2 | 35 | 0 | 0 | 0 | 44.1 | 45 | 27 | 29 | 9 | 18 | 1 | 10 | 0 | 194 | 1 | 7.11 | 3.65 | 1.94 | 1.83 | 18.0 | 9.3 | 1.42 | .275 | 5.89 | 133 | 5.47 | 134 | 9.14 | -6.9 |
| 25 | | J. Fernández | 1.000 | 5.40 | 2025 | TOT | 1 | 0 | 4 | 0 | 5 | 0 | 0 | 0 | 5.0 | 3 | 3 | 3 | 2 | 2 | 0 | 2 | 0 | 20 | 0 | 9.00 | 3.60 | 2.50 | 3.60 | 25.0 | 10.0 | 1.00 | .091 | 5.40 | 129 | 7.53 | 179 | 5.40 | -1.8 |
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
48 | 31 | .608 | ||
45 | 36 | .556 | 4.0 | |
42 | 39 | .519 | 7.0 | |
41 | 41 | .500 | 8.5 | |
34 | 47 | .420 | 15.0 | |
| NL Central | W | L | PCT | GB |
49 | 29 | .628 | ||
44 | 37 | .543 | 6.5 | |
42 | 36 | .538 | 7.0 | |
41 | 40 | .506 | 9.5 | |
37 | 42 | .468 | 12.5 | |
| NL West | W | L | PCT | GB |
52 | 29 | .642 | ||
42 | 37 | .532 | 9.0 | |
41 | 39 | .513 | 10.5 | |
33 | 47 | .413 | 18.5 | |
32 | 49 | .395 | 20.0 |
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Brewers
Cubs
Cardinals
Padres| AL East | W | L | PCT | GB |
|---|---|---|---|---|
48 | 32 | .600 | ||
45 | 33 | .577 | 2.0 | |
39 | 42 | .481 | 9.5 | |
38 | 44 | .463 | 11.0 | |
33 | 46 | .418 | 14.5 | |
| AL Central | W | L | PCT | GB |
41 | 38 | .519 | ||
42 | 39 | .519 | ||
38 | 44 | .463 | 4.5 | |
34 | 47 | .420 | 8.0 | |
34 | 48 | .415 | 8.5 | |
| AL West | W | L | PCT | GB |
41 | 41 | .500 | ||
40 | 43 | .482 | 1.5 | |
39 | 42 | .481 | 1.5 | |
39 | 42 | .481 | 1.5 | |
34 | 48 | .415 | 7.0 |
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