Between the 1929 and 1931 seasons, the New York Yankees pitched the most innings by an AL team, with 4144.2 innings.
| TEAM | IP | G | W% | W | L | GS | ERA | SO | CG | SHO | SV | H | ER | R | HR | BB | HBP | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Yankees | 4144.2 | 463 | .581 | 268 | 193 | 463 | 4.42 | 1,742 | 207 | 23 | 55 | 4,502 | 2,037 | 2,430 | 243 | 1,552 | 78 | 18,333 | 82 | 3.78 | 3.37 | 1.12 | 0.53 | 9.5 | 8.5 | 1.46 | .289 | 5.28 | 9.78 | |
| 2 |  | Tigers | 4126.1 | 463 | .446 | 206 | 256 | 463 | 4.75 | 1,552 | 235 | 14 | 33 | 4,697 | 2,178 | 2,596 | 238 | 1,813 | 88 | 18,585 | 84 | 3.39 | 3.95 | 0.86 | 0.52 | 8.4 | 9.8 | 1.58 | .299 | 5.66 | 10.24 | |
| 3 |  | Senators | 4118.0 | 463 | .559 | 257 | 203 | 463 | 4.02 | 1,600 | 199 | 15 | 54 | 4,230 | 1,839 | 2,154 | 173 | 1,498 | 62 | 17,726 | 65 | 3.50 | 3.27 | 1.07 | 0.38 | 9.0 | 8.5 | 1.39 | .282 | 4.71 | 9.24 | |
| 4 |  | White Sox | 4109.0 | 462 | .386 | 177 | 282 | 462 | 4.72 | 1,220 | 195 | 13 | 28 | 4,723 | 2,157 | 2,616 | 240 | 1,500 | 91 | 18,321 | 58 | 2.67 | 3.29 | 0.81 | 0.53 | 6.7 | 8.2 | 1.51 | .294 | 5.73 | 10.34 | |
| 5 |  | Browns | 4104.2 | 462 | .448 | 206 | 254 | 462 | 4.64 | 1,321 | 216 | 24 | 31 | 4,731 | 2,114 | 2,469 | 308 | 1,359 | 62 | 18,068 | 39 | 2.90 | 2.98 | 0.97 | 0.68 | 7.3 | 7.5 | 1.48 | .295 | 5.41 | 10.37 | |
| 6 |  | Red Sox | 4093.2 | 462 | .374 | 172 | 288 | 462 | 4.57 | 1,137 | 224 | 17 | 20 | 4,611 | 2,078 | 2,415 | 207 | 1,457 | 73 | 18,052 | 72 | 2.50 | 3.20 | 0.78 | 0.46 | 6.3 | 8.1 | 1.48 | .290 | 5.31 | 10.14 | |
| 7 |  | Athletics | 4093.1 | 458 | .686 | 313 | 143 | 458 | 3.73 | 1,819 | 239 | 29 | 62 | 4,170 | 1,696 | 1,993 | 230 | 1,432 | 44 | 17,581 | 73 | 4.00 | 3.15 | 1.27 | 0.51 | 10.3 | 8.1 | 1.37 | .280 | 4.38 | 9.17 | |
| 8 |  | Indians | 4066.2 | 461 | .522 | 240 | 220 | 461 | 4.52 | 1,301 | 224 | 19 | 34 | 4,810 | 2,044 | 2,486 | 205 | 1,577 | 72 | 18,335 | 56 | 2.88 | 3.49 | 0.82 | 0.45 | 7.1 | 8.6 | 1.57 | .303 | 5.50 | 10.65 |
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