Between the 1997 and 2013 seasons, the Oakland Athletics had the best ERA by an AL team, with an ERA of 4.08.
| TEAM | ERA | G | W% | W | L | GS | SO | CG | SHO | SV | IP | 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 |  | Athletics | 4.08 | 2,752 | .531 | 1,461 | 1,291 | 2,752 | 17,843 | 119 | 42 | 712 | 24615.0 | 24,490 | 11,159 | 12,293 | 2,630 | 8,895 | 860 | 704 | 105,569 | 784 | 6.52 | 3.25 | 2.01 | 0.96 | 16.9 | 8.4 | 1.36 | .290 | 4.49 | 8.95 |
| 2 |  | Yankees | 4.16 | 2,752 | .598 | 1,645 | 1,105 | 2,752 | 19,315 | 112 | 42 | 809 | 24607.1 | 24,539 | 11,366 | 12,325 | 2,764 | 8,359 | 979 | 567 | 105,308 | 909 | 7.06 | 3.06 | 2.31 | 1.01 | 18.3 | 7.9 | 1.34 | .295 | 4.51 | 8.98 |
| 3 |  | Angels | 4.20 | 2,754 | .534 | 1,472 | 1,282 | 2,754 | 18,113 | 106 | 44 | 781 | 24607.1 | 24,611 | 11,495 | 12,458 | 2,918 | 8,971 | 863 | 517 | 105,638 | 1,039 | 6.62 | 3.28 | 2.02 | 1.07 | 17.1 | 8.5 | 1.36 | .290 | 4.56 | 9.00 |
| 4 |  | Brewers | 4.22 | 161 | .484 | 78 | 83 | 161 | 1,016 | 6 | 3 | 44 | 1427.1 | 1,419 | 669 | 742 | 177 | 542 | 61 | 25 | 6,120 | 46 | 6.41 | 3.42 | 1.87 | 1.12 | 16.6 | 8.9 | 1.37 | .287 | 4.68 | 8.95 |
| 5 |  | Red Sox | 4.26 | 2,753 | .555 | 1,529 | 1,224 | 2,753 | 19,436 | 85 | 30 | 725 | 24590.0 | 24,404 | 11,652 | 12,696 | 2,718 | 8,673 | 1,192 | 496 | 105,738 | 773 | 7.11 | 3.17 | 2.24 | 0.99 | 18.4 | 8.2 | 1.35 | .294 | 4.65 | 8.93 |
| 6 |  | Mariners | 4.35 | 2,753 | .493 | 1,356 | 1,397 | 2,753 | 18,054 | 129 | 49 | 695 | 24547.1 | 24,699 | 11,851 | 12,796 | 2,953 | 8,968 | 924 | 571 | 105,736 | 925 | 6.62 | 3.29 | 2.01 | 1.08 | 17.1 | 8.5 | 1.37 | .291 | 4.69 | 9.06 |
| 7 |  | Blue Jays | 4.40 | 2,754 | .496 | 1,366 | 1,387 | 2,754 | 18,432 | 163 | 59 | 647 | 24557.2 | 25,089 | 11,997 | 13,030 | 2,999 | 8,990 | 1,027 | 611 | 106,130 | 866 | 6.76 | 3.29 | 2.05 | 1.10 | 17.4 | 8.5 | 1.39 | .296 | 4.78 | 9.19 |
| 8 |  | White Sox | 4.41 | 2,755 | .511 | 1,407 | 1,346 | 2,755 | 18,009 | 114 | 33 | 706 | 24539.0 | 25,061 | 12,037 | 13,160 | 3,065 | 8,737 | 914 | 636 | 105,760 | 937 | 6.61 | 3.20 | 2.06 | 1.12 | 17.0 | 8.3 | 1.38 | .293 | 4.83 | 9.19 |
| 9 |  | Twins | 4.43 | 2,754 | .491 | 1,353 | 1,400 | 2,754 | 17,126 | 111 | 44 | 685 | 24577.1 | 26,187 | 12,088 | 13,030 | 3,103 | 7,454 | 766 | 472 | 105,512 | 880 | 6.27 | 2.73 | 2.30 | 1.14 | 16.2 | 7.1 | 1.37 | .300 | 4.77 | 9.59 |
| 10 |  | Indians | 4.48 | 2,753 | .507 | 1,397 | 1,356 | 2,753 | 18,213 | 107 | 37 | 641 | 24555.0 | 25,530 | 12,221 | 13,336 | 2,835 | 9,120 | 929 | 646 | 106,552 | 841 | 6.68 | 3.34 | 2.00 | 1.04 | 17.1 | 8.6 | 1.41 | .301 | 4.89 | 9.36 |
| 11 |  | Rays | 4.53 | 2,590 | .461 | 1,195 | 1,395 | 2,590 | 17,188 | 99 | 38 | 603 | 23008.0 | 23,324 | 11,577 | 12,652 | 2,901 | 9,042 | 1,063 | 509 | 99,995 | 918 | 6.72 | 3.54 | 1.90 | 1.13 | 17.2 | 9.0 | 1.41 | .293 | 4.95 | 9.12 |
| 12 |  | Tigers | 4.55 | 2,753 | .472 | 1,299 | 1,454 | 2,753 | 17,262 | 107 | 30 | 646 | 24478.2 | 25,554 | 12,367 | 13,483 | 2,928 | 9,012 | 927 | 633 | 106,152 | 965 | 6.35 | 3.31 | 1.92 | 1.08 | 16.3 | 8.5 | 1.41 | .298 | 4.96 | 9.40 |
| 13 |  | Orioles | 4.72 | 2,754 | .460 | 1,266 | 1,486 | 2,754 | 17,586 | 116 | 28 | 640 | 24504.0 | 25,632 | 12,854 | 13,817 | 3,233 | 9,831 | 941 | 617 | 107,256 | 837 | 6.46 | 3.61 | 1.79 | 1.19 | 16.4 | 9.2 | 1.45 | .296 | 5.07 | 9.41 |
| 14 |  | Rangers | 4.75 | 2,755 | .510 | 1,406 | 1,349 | 2,755 | 17,599 | 91 | 32 | 714 | 24457.1 | 26,071 | 12,897 | 14,040 | 3,014 | 9,443 | 1,005 | 514 | 107,333 | 917 | 6.48 | 3.47 | 1.86 | 1.11 | 16.4 | 8.8 | 1.45 | .302 | 5.17 | 9.59 |
| 15 |  | Astros | 4.79 | 162 | .315 | 51 | 111 | 162 | 1,084 | 2 | 1 | 32 | 1440.0 | 1,530 | 766 | 848 | 191 | 616 | 56 | 32 | 6,370 | 61 | 6.78 | 3.85 | 1.76 | 1.19 | 17.0 | 9.7 | 1.49 | .303 | 5.30 | 9.56 |
| 16 |  | Royals | 4.88 | 2,751 | .426 | 1,171 | 1,580 | 2,751 | 16,849 | 105 | 30 | 605 | 24415.2 | 26,347 | 13,246 | 14,352 | 3,183 | 9,638 | 932 | 605 | 107,286 | 1,132 | 6.21 | 3.55 | 1.75 | 1.17 | 15.7 | 9.0 | 1.47 | .302 | 5.29 | 9.71 |
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
89 | 64 | .582 | ||
85 | 68 | .556 | 4.0 | |
76 | 77 | .497 | 13.0 | |
71 | 82 | .464 | 18.0 | |
69 | 84 | .451 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 95 | 58 | .621 | |
85 | 68 | .556 | 10.0 | |
76 | 77 | .497 | 19.0 | |
75 | 78 | .490 | 20.0 | |
71 | 82 | .464 | 24.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 93 | 60 | .608 | |
84 | 69 | .549 | 9.0 | |
80 | 73 | .523 | 13.0 | |
64 | 89 | .418 | 29.0 | |
56 | 97 | .366 | 37.0 |
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