The Seattle Mariners have lost the most games by a Cy Young winner in a season, with 101 losses in 2010.
- Regular season
| TEAM | L | CY | SEASON | W | L% | G | W% | 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 | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Mariners | 101 | 1 | 2010 | 61 | .623 | 162 | .377 | 162 | 3.95 | 973 | 11 | 2 | 38 | 1438.0 | 1,402 | 631 | 698 | 157 | 452 | 40 | 151 | 33 | 6,091 | 73 | 6.09 | 2.83 | 2.15 | 0.98 | 16.0 | 7.4 | 1.29 | .279 | 4.37 | 8.77 |
| 2 |  | Royals | 97 | 1 | 2009 | 65 | .599 | 162 | .401 | 162 | 4.83 | 1,153 | 10 | 5 | 34 | 1426.0 | 1,486 | 765 | 842 | 166 | 600 | 51 | 152 | 28 | 6,265 | 89 | 7.28 | 3.79 | 1.92 | 1.05 | 18.4 | 9.6 | 1.46 | .307 | 5.31 | 9.38 |
| 3 |  | Phillies | 97 | 1 | 1972 | 59 | .622 | 156 | .378 | 156 | 3.67 | 927 | 43 | 13 | 15 | 1400.0 | 1,318 | 571 | 635 | 117 | 536 | 29 | 113 | 75 | 5,932 | 51 | 5.96 | 3.45 | 1.73 | 0.75 | 15.6 | 9.0 | 1.32 | .278 | 4.08 | 8.47 |
| 4 |  | Marlins | 93 | 1 | 2022 | 69 | .574 | 162 | .426 | 162 | 3.87 | 1,437 | 6 | 1 | 41 | 1437.1 | 1,311 | 618 | 676 | 173 | 511 | 76 | 156 | 19 | 6,056 | 54 | 9.00 | 3.20 | 2.81 | 1.08 | 23.7 | 8.4 | 1.27 | .295 | 4.23 | 8.21 |
| 5 |  | Pirates | 91 | 1 | 2025 | 71 | .562 | 162 | .438 | 162 | 3.76 | 1,314 | 1 | 0 | 36 | 1430.2 | 1,267 | 598 | 645 | 153 | 473 | 73 | 161 | 18 | 5,982 | 46 | 8.27 | 2.98 | 2.78 | 0.96 | 22.0 | 7.9 | 1.22 | .281 | 4.06 | 7.97 |
| 6 |  | Giants | 90 | 1 | 2008 | 72 | .556 | 162 | .444 | 162 | 4.38 | 1,240 | 4 | 2 | 41 | 1442.0 | 1,416 | 701 | 759 | 147 | 652 | 70 | 158 | 59 | 6,341 | 77 | 7.74 | 4.07 | 1.90 | 0.92 | 19.6 | 10.3 | 1.43 | .300 | 4.74 | 8.84 |
| 7 |  | Padres | 89 | 1 | 1976 | 73 | .549 | 162 | .451 | 162 | 3.65 | 652 | 47 | 11 | 18 | 1432.1 | 1,368 | 581 | 662 | 87 | 543 | 20 | 115 | 83 | 6,087 | 48 | 4.10 | 3.41 | 1.20 | 0.55 | 10.7 | 8.9 | 1.33 | .268 | 4.16 | 8.60 |
| 8 |  | Mets | 88 | 1 | 2012 | 74 | .543 | 162 | .457 | 162 | 4.09 | 1,240 | 7 | 5 | 36 | 1434.0 | 1,368 | 652 | 709 | 161 | 488 | 40 | 155 | 29 | 6,086 | 40 | 7.78 | 3.06 | 2.54 | 1.01 | 20.4 | 8.0 | 1.29 | .290 | 4.45 | 8.59 |
| 9 |  | Blue Jays | 88 | 1 | 1996 | 74 | .543 | 162 | .457 | 162 | 4.58 | 1,033 | 19 | 5 | 35 | 1445.2 | 1,476 | 735 | 809 | 187 | 610 | 36 | 143 | 37 | 6,271 | 61 | 6.43 | 3.80 | 1.69 | 1.16 | 16.5 | 9.7 | 1.44 | .293 | 5.04 | 9.19 |
| 10 |  | Indians | 87 | 1 | 1984 | 75 | .537 | 163 | .463 | 163 | 4.26 | 803 | 21 | 5 | 35 | 1467.2 | 1,523 | 695 | 766 | 141 | 545 | 27 | 142 | 47 | 6,360 | 46 | 4.92 | 3.34 | 1.47 | 0.86 | 12.6 | 8.6 | 1.41 | .285 | 4.70 | 9.34 |
| 11 |  | Diamondbacks | 86 | 1 | 2006 | 76 | .531 | 162 | .469 | 162 | 4.49 | 1,115 | 8 | 4 | 34 | 1459.2 | 1,503 | 728 | 788 | 168 | 536 | 61 | 154 | 44 | 6,341 | 53 | 6.87 | 3.30 | 2.08 | 1.04 | 17.6 | 8.5 | 1.40 | .299 | 4.86 | 9.27 |
| 12 |  | Blue Jays | 86 | 1 | 1997 | 76 | .531 | 162 | .469 | 162 | 3.93 | 1,150 | 19 | 7 | 34 | 1442.2 | 1,453 | 630 | 694 | 167 | 497 | 39 | 143 | 29 | 6,149 | 54 | 7.17 | 3.10 | 2.31 | 1.04 | 18.7 | 8.1 | 1.35 | .299 | 4.33 | 9.06 |
| 13 |  | Cardinals | 86 | 1 | 1970 | 76 | .531 | 162 | .469 | 162 | 4.06 | 960 | 51 | 10 | 20 | 1475.2 | 1,483 | 665 | 747 | 102 | 632 | 22 | 111 | 102 | 6,425 | 66 | 5.85 | 3.85 | 1.52 | 0.62 | 14.9 | 9.8 | 1.43 | .293 | 4.56 | 9.04 |
| 14 | | Mets | 85 | 1 | 2018 | 77 | .525 | 162 | .475 | 162 | 4.07 | 1,446 | 3 | 1 | 41 | 1460.2 | 1,364 | 661 | 707 | 185 | 484 | 71 | 159 | 32 | 6,178 | 26 | 8.91 | 2.98 | 2.99 | 1.14 | 23.4 | 7.8 | 1.27 | .295 | 4.36 | 8.40 |
| 15 |  | Expos | 84 | 1 | 1997 | 78 | .519 | 162 | .481 | 162 | 4.14 | 1,138 | 27 | 12 | 37 | 1447.0 | 1,365 | 665 | 740 | 149 | 557 | 63 | 135 | 45 | 6,189 | 52 | 7.08 | 3.46 | 2.04 | 0.93 | 18.4 | 9.0 | 1.33 | .284 | 4.60 | 8.49 |
| 16 |  | Cubs | 84 | 1 | 1992 | 78 | .519 | 162 | .481 | 162 | 3.39 | 901 | 16 | 5 | 37 | 1469.0 | 1,337 | 554 | 624 | 107 | 575 | 44 | 146 | 75 | 6,201 | 68 | 5.52 | 3.52 | 1.57 | 0.66 | 14.5 | 9.3 | 1.30 | .269 | 3.82 | 8.19 |
| 17 |  | Red Sox | 84 | 1 | 1987 | 78 | .519 | 162 | .481 | 162 | 4.78 | 1,034 | 47 | 13 | 16 | 1436.0 | 1,584 | 763 | 825 | 190 | 517 | 31 | 115 | 38 | 6,265 | 37 | 6.48 | 3.24 | 2.00 | 1.19 | 16.5 | 8.3 | 1.46 | .310 | 5.17 | 9.93 |
| 18 | | Indians | 84 | 1 | 1972 | 72 | .538 | 156 | .462 | 156 | 2.97 | 846 | 47 | 11 | 25 | 1410.0 | 1,232 | 465 | 519 | 123 | 534 | 40 | 109 | 93 | 5,878 | 43 | 5.40 | 3.41 | 1.58 | 0.79 | 14.4 | 9.1 | 1.25 | .256 | 3.31 | 7.86 |
| 19 |  | Phillies | 82 | 1 | 1987 | 80 | .506 | 162 | .494 | 162 | 4.18 | 877 | 13 | 5 | 48 | 1448.1 | 1,453 | 673 | 749 | 167 | 587 | 35 | 149 | 86 | 6,265 | 35 | 5.45 | 3.65 | 1.49 | 1.04 | 14.0 | 9.4 | 1.41 | .280 | 4.65 | 9.03 |
| 20 | | Cubs | 82 | 1 | 1979 | 80 | .506 | 162 | .494 | 162 | 3.90 | 933 | 20 | 5 | 44 | 1446.2 | 1,500 | 627 | 707 | 127 | 521 | 43 | 141 | 87 | 6,232 | 40 | 5.80 | 3.24 | 1.79 | 0.79 | 15.0 | 8.4 | 1.40 | .298 | 4.40 | 9.33 |
| 21 | | Indians | 81 | 1 | 2008 | 81 | .500 | 162 | .500 | 162 | 4.46 | 986 | 10 | 5 | 31 | 1437.0 | 1,530 | 712 | 761 | 170 | 444 | 51 | 152 | 28 | 6,164 | 44 | 6.18 | 2.78 | 2.22 | 1.06 | 16.0 | 7.2 | 1.37 | .301 | 4.77 | 9.58 |
| 22 |  | Yankees | 80 | 1 | 2023 | 82 | .494 | 162 | .506 | 162 | 3.97 | 1,439 | 3 | 3 | 44 | 1439.2 | 1,272 | 635 | 698 | 195 | 508 | 85 | 159 | 6 | 6,078 | 60 | 9.00 | 3.18 | 2.83 | 1.22 | 23.7 | 8.4 | 1.24 | .280 | 4.36 | 7.95 |
| 23 |  | Padres | 80 | 1 | 2023 | 82 | .494 | 162 | .506 | 162 | 3.75 | 1,445 | 0 | 0 | 35 | 1441.0 | 1,271 | 600 | 648 | 174 | 557 | 76 | 162 | 14 | 6,082 | 48 | 9.02 | 3.48 | 2.59 | 1.09 | 23.8 | 9.2 | 1.27 | .286 | 4.05 | 7.94 |
| 24 | | Mets | 80 | 1 | 1975 | 82 | .494 | 162 | .506 | 162 | 3.39 | 989 | 40 | 13 | 31 | 1466.0 | 1,344 | 552 | 625 | 99 | 580 | 24 | 122 | 64 | 6,190 | 48 | 6.07 | 3.56 | 1.71 | 0.61 | 16.0 | 9.4 | 1.31 | .277 | 3.84 | 8.25 |
| 25 |  | Angels | 80 | 1 | 1964 | 82 | .494 | 162 | .506 | 162 | 2.91 | 966 | 30 | 17 | 41 | 1450.2 | 1,273 | 469 | 551 | 100 | 530 | 50 | 132 | 55 | 6,062 | 42 | 5.99 | 3.29 | 1.82 | 0.62 | 15.9 | 8.7 | 1.24 | .266 | 3.42 | 7.90 |
StatMuse has game-level data for Cy Young awards and losses going back to the 1908 season.
Some of the information used here was obtained free of charge from Retrosheet.
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