50 pitchers are tied for winning the fewest games in a season, with 0 wins this season. The first three are Dan Altavilla, Jacob Barnes and Tucker Barnhart.
| NAME | W | SEASON | TM | L | W% | G | GS | ERA | 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 |  | D. Altavilla | 0 | 2025 |  CWS | 1 | .000 | 14 | 0 | 1.69 | 10 | 0 | 0 | 1 | 16.0 | 9 | 3 | 4 | 3 | 6 | 2 | 7 | 0 | 61 | 0 | 5.63 | 3.38 | 1.67 | 1.69 | 16.4 | 9.8 | 0.94 | .150 | 2.25 | 42 | 5.77 | 137 | 5.06 | -2.7 |
| 2 | | J. Barnes | 0 | 2025 |  TOR | 1 | .000 | 6 | 0 | 9.00 | 5 | 0 | 0 | 0 | 8.0 | 10 | 8 | 9 | 1 | 3 | 0 | 2 | 0 | 36 | 0 | 5.63 | 3.38 | 1.67 | 1.13 | 13.9 | 8.3 | 1.63 | .333 | 10.13 | 226 | 4.58 | 112 | 11.25 | -0.4 |
| 3 | | T. Barnhart | 0 | 2025 |  TEX | 0 | 1 | 0 | 13.50 | 0 | 0 | 0 | 0 | 2.0 | 5 | 3 | 3 | 0 | 0 | 1 | 1 | 0 | 11 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 2.50 | .500 | 13.50 | 336 | 4.58 | 110 | 22.50 | -0.1 | ||
| 4 | | J. Bauers | 0 | 2025 |  MIL | 0 | 5 | 0 | 3.60 | 1 | 0 | 0 | 0 | 5.0 | 8 | 2 | 4 | 0 | 3 | 2 | 5 | 0 | 29 | 0 | 1.80 | 5.40 | 0.33 | 0.00 | 3.4 | 10.3 | 2.20 | .348 | 7.20 | 87 | 5.68 | 139 | 14.40 | -0.9 | |
| 5 | | F. Bautista | 0 | 2025 |  BAL | 1 | .000 | 31 | 0 | 2.64 | 43 | 0 | 0 | 17 | 30.2 | 15 | 9 | 9 | 3 | 19 | 0 | 26 | 0 | 125 | 1 | 12.62 | 5.58 | 2.26 | 0.88 | 34.4 | 15.2 | 1.11 | .200 | 2.64 | 67 | 3.41 | 85 | 4.40 | 2.1 |
| 6 | | J. Berti | 0 | 2025 |  CHC | 0 | 1 | 0 | 18.00 | 0 | 0 | 0 | 0 | 1.0 | 2 | 2 | 2 | 0 | 3 | 0 | 1 | 0 | 8 | 0 | 0.00 | 27.00 | 0.00 | 0.00 | 0.0 | 37.5 | 5.00 | .400 | 18.00 | 451 | 12.08 | 305 | 18.00 | -0.9 | |
| 7 | | P. Blackburn | 0 | 2025 |  NYM | 3 | .000 | 6 | 4 | 7.71 | 15 | 0 | 0 | 1 | 18.2 | 30 | 16 | 17 | 2 | 7 | 1 | 1 | 0 | 93 | 1 | 7.23 | 3.38 | 2.14 | 0.96 | 16.1 | 7.5 | 1.98 | .412 | 8.20 | 195 | 4.15 | 104 | 14.46 | -0.3 |
| 8 | | M. Bowman | 0 | 2025 | BAL | 1 | .000 | 19 | 0 | 5.79 | 17 | 0 | 0 | 0 | 23.1 | 29 | 15 | 16 | 4 | 6 | 2 | 8 | 0 | 108 | 1 | 6.56 | 2.31 | 2.83 | 1.54 | 15.7 | 5.6 | 1.50 | .316 | 6.17 | 147 | 4.88 | 122 | 11.19 | -2.3 |
| 9 | | R. Brasier | 0 | 2025 | CHC | 0 | 15 | 0 | 1.29 | 11 | 0 | 0 | 0 | 14.0 | 10 | 2 | 2 | 0 | 3 | 0 | 3 | 0 | 52 | 0 | 7.07 | 1.93 | 3.67 | 0.00 | 21.2 | 5.8 | 0.93 | .263 | 1.29 | 32 | 2.15 | 54 | 6.43 | 2.9 | |
| 10 | | J. Brigham | 0 | 2025 |  AZ | 0 | 4 | 0 | 8.10 | 3 | 0 | 0 | 0 | 3.1 | 7 | 3 | 3 | 1 | 1 | 0 | 1 | 0 | 18 | 0 | 8.10 | 2.70 | 3.00 | 2.70 | 16.7 | 5.6 | 2.40 | .462 | 8.10 | 195 | 6.08 | 155 | 18.90 | -0.8 | |
| 11 | | N. Burdi | 0 | 2025 |  BOS | 0 | 4 | 0 | 0.00 | 5 | 0 | 0 | 0 | 5.1 | 5 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | 21 | 1 | 8.44 | 3.38 | 2.50 | 0.00 | 23.8 | 9.5 | 1.31 | .357 | 0.00 | 0 | 2.33 | 56 | 8.44 | 1.1 | |
| 12 | | G. Cabrera | 0 | 2025 | TOT | 0 | 17 | 0 | 5.59 | 17 | 0 | 0 | 0 | 19.1 | 18 | 12 | 12 | 5 | 6 | 1 | 4 | 0 | 80 | 0 | 7.91 | 2.79 | 2.83 | 2.33 | 21.3 | 7.5 | 1.24 | .255 | 5.59 | 140 | 5.77 | 145 | 8.38 | -3.9 | |
| 13 | | J. Castillo | 0 | 2025 | TOT | 2 | .000 | 18 | 0 | 5.60 | 17 | 0 | 0 | 0 | 17.2 | 26 | 11 | 13 | 3 | 9 | 4 | 3 | 0 | 89 | 1 | 8.66 | 4.58 | 1.89 | 1.53 | 19.1 | 10.1 | 1.98 | .411 | 6.62 | 137 | 5.57 | 141 | 13.25 | -3.3 |
| 14 | | L. F. Castillo | 0 | 2025 |  SEA | 0 | 2 | 2 | 7.71 | 5 | 0 | 0 | 0 | 7.0 | 12 | 6 | 7 | 0 | 7 | 0 | 0 | 0 | 41 | 0 | 6.43 | 9.00 | 0.71 | 0.00 | 12.2 | 17.1 | 2.71 | .414 | 9.00 | 204 | 4.65 | 118 | 15.43 | -0.6 | |
| 15 | | M. Castro | 0 | 2025 | CWS | 0 | 6 | 0 | 7.50 | 4 | 0 | 0 | 0 | 6.0 | 5 | 5 | 5 | 1 | 5 | 1 | 1 | 0 | 28 | 0 | 6.00 | 7.50 | 0.80 | 1.50 | 14.3 | 17.9 | 1.67 | .235 | 7.50 | 185 | 6.91 | 164 | 7.50 | -1.7 | |
| 16 | | W. Castro | 0 | 2025 |  MIN | 0 | 1 | 0 | 0.00 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.08 | 75 | 9.00 | 0.1 | ||
| 17 | | A. Chafin | 0 | 2025 |  WSH | 0 | 17 | 0 | 2.92 | 14 | 0 | 0 | 0 | 12.1 | 13 | 4 | 6 | 0 | 11 | 0 | 5 | 0 | 58 | 4 | 10.22 | 8.03 | 1.27 | 0.00 | 24.1 | 19.0 | 1.95 | .394 | 4.38 | 72 | 3.49 | 85 | 9.49 | 0.8 | |
| 18 | | J. Chavez | 0 | 2025 |  ATL | 0 | 2 | 0 | 6.00 | 3 | 0 | 0 | 0 | 3.0 | 4 | 2 | 2 | 1 | 3 | 0 | 0 | 0 | 16 | 0 | 9.00 | 9.00 | 1.00 | 3.00 | 18.8 | 18.8 | 2.33 | .333 | 6.00 | 144 | 8.41 | 212 | 12.00 | -1.5 | |
| 19 | | M. Clevinger | 0 | 2025 | CWS | 2 | .000 | 8 | 0 | 7.94 | 3 | 0 | 0 | 0 | 5.2 | 5 | 5 | 5 | 0 | 8 | 0 | 3 | 0 | 31 | 1 | 4.76 | 12.71 | 0.38 | 0.00 | 9.7 | 25.8 | 2.29 | .250 | 7.94 | 196 | 6.26 | 148 | 7.94 | -1.2 |
| 20 | | A. DeSclafani | 0 | 2025 | AZ | 0 | 4 | 0 | 4.82 | 9 | 0 | 0 | 1 | 9.1 | 9 | 5 | 6 | 3 | 2 | 1 | 3 | 0 | 39 | 0 | 8.68 | 1.93 | 4.50 | 2.89 | 23.1 | 5.1 | 1.18 | .250 | 5.79 | 116 | 6.30 | 161 | 8.68 | -2.5 | |
| 21 | | C. Devenski | 0 | 2025 | NYM | 0 | 4 | 0 | 3.60 | 5 | 0 | 0 | 0 | 5.0 | 3 | 2 | 2 | 0 | 1 | 0 | 3 | 0 | 19 | 0 | 9.00 | 1.80 | 5.00 | 0.00 | 26.3 | 5.3 | 0.80 | .231 | 3.60 | 91 | 1.68 | 42 | 5.40 | 1.3 | |
| 22 | | J. DÃaz | 0 | 2025 | SEA | 0 | 1 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 6.75 | 0.00 | 0.00 | 20.0 | 0.0 | 0.75 | .250 | 0.00 | 0 | 1.58 | 40 | 6.75 | 0.4 | ||
| 23 | | D. Dunning | 0 | 2025 | TEX | 0 | 3 | 0 | 3.38 | 6 | 0 | 0 | 2 | 8.0 | 8 | 3 | 3 | 1 | 5 | 1 | 3 | 1 | 37 | 1 | 6.75 | 5.63 | 1.20 | 1.13 | 16.2 | 13.5 | 1.63 | .292 | 3.38 | 84 | 5.46 | 131 | 9.00 | -1.1 | |
| 24 | | C. Edwards Jr. | 0 | 2025 |  LAA | 0 | 2 | 0 | 9.00 | 2 | 0 | 0 | 0 | 3.0 | 4 | 3 | 3 | 1 | 1 | 0 | 1 | 0 | 13 | 0 | 6.00 | 3.00 | 2.00 | 3.00 | 15.4 | 7.7 | 1.67 | .333 | 9.00 | 220 | 7.08 | 168 | 12.00 | -0.9 | |
| 25 | | J.P. Feyereisen | 0 | 2025 | TOT | 2 | .000 | 4 | 0 | 11.25 | 4 | 0 | 0 | 0 | 4.0 | 11 | 5 | 7 | 2 | 1 | 0 | 3 | 1 | 23 | 0 | 9.00 | 2.25 | 4.00 | 4.50 | 17.4 | 4.3 | 3.00 | .563 | 15.75 | 275 | 8.33 | 207 | 24.75 | -1.9 |
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