Data courtesy Baseball-Reference.com. Ratings current through 1 October 2018 (2431 games).
| Rank | Team | Div. | Z-Rating | BSWP | nDWP | Record | Pct | Ratio | SOS | Rank | ||||
| 1 | Boston Red Sox | AE | 187.95 | .6535 | .6512 | 108-54 | .667 | 2.000 | 93.975 | 25 | ||||
| 2 | Houston Astros | AW | 175.27 | .6373 | .6411 | 103-59 | .636 | 1.746 | 100.40 | 19 | ||||
| 3 | New York Yankees | AE | 152.68 | .6046 | .6038 | 100-62 | .617 | 1.613 | 94.659 | 24 | ||||
| 4 | Oakland Athletics | AW | 149.47 | .5995 | .6047 | 97-65 | .599 | 1.492 | 100.16 | 21 | ||||
| 5 | Milwaukee Brewers | NC | 144.53 | .5913 | .5946 | 96-67 | .589 | 1.433 | 100.87 | 18 | ||||
| 6 | Chicago Cubs | NC | 140.13 | .5838 | .5873 | 95-68 | .583 | 1.397 | 100.30 | 20 | ||||
| 7 | Los Angeles Dodgers | NW | 136.06 | .5766 | .5769 | 92-71 | .564 | 1.296 | 105.00 | 8 | ||||
| 8 | Colorado Rockies | NW | 133.77 | .5724 | .5729 | 91-72 | .558 | 1.264 | 105.84 | 7 | ||||
| 9 | Atlanta Braves | NE | 126.58 | .5588 | .5549 | 90-72 | .556 | 1.250 | 101.26 | 16 | ||||
| 10 | Seattle Mariners | AW | 125.50 | .5567 | .5636 | 89-73 | .549 | 1.219 | 102.94 | 12 | ||||
| 11 | Tampa Bay Rays | AE | 121.10 | .5478 | .5487 | 90-72 | .556 | 1.250 | 96.880 | 23 | ||||
| 12 | St. Louis Cardinals | NC | 120.73 | .5471 | .5520 | 88-74 | .543 | 1.189 | 101.52 | 15 | ||||
| 13 | Arizona Diamondbacks | NW | 110.25 | .5244 | .5267 | 82-80 | .506 | 1.025 | 107.56 | 3 | ||||
| 14 | Cleveland Indians | AC | 107.57 | .5183 | .4984 | 91-71 | .562 | 1.282 | 83.927 | 30 | ||||
| 15 | Pittsburgh Pirates | NC | 106.76 | .5164 | .5225 | 82-79 | .509 | 1.038 | 102.85 | 13 | ||||
| 16 | Washington Nationals | NE | 103.65 | .5090 | .5070 | 82-80 | .506 | 1.025 | 101.12 | 17 | ||||
| 17 | LA Angels of Anaheim | AW | 101.69 | .5042 | .5130 | 80-82 | .494 | 0.976 | 104.24 | 10 | ||||
| 18 | Philadelphia Phillies | NE | 99.514 | .4988 | .4972 | 80-82 | .494 | 0.976 | 102.00 | 14 | ||||
| 19 | New York Mets | NE | 93.869 | .4842 | .4831 | 77-85 | .475 | 0.906 | 103.62 | 11 | ||||
| 20 | San Francisco Giants | NW | 90.332 | .4746 | .4787 | 73-89 | .451 | 0.820 | 110.13 | 2 | ||||
| 21 | Toronto Blue Jays | AE | 81.546 | .4491 | .4526 | 73-89 | .451 | 0.820 | 99.419 | 22 | ||||
| 22 | Minnesota Twins | AC | 80.269 | .4452 | .4276 | 78-84 | .481 | 0.929 | 86.443 | 29 | ||||
| 23 | San Diego Padres | NW | 76.055 | .4319 | .4375 | 66-96 | .407 | 0.688 | 110.63 | 1 | ||||
| 24 | Cincinnati Reds | NC | 75.619 | .4305 | .4396 | 67-95 | .414 | 0.705 | 107.22 | 5 | ||||
| 25 | Texas Rangers | AW | 74.655 | .4273 | .4386 | 67-95 | .414 | 0.705 | 105.85 | 6 | ||||
| 26 | Miami Marlins | NE | 68.962 | .4080 | .4098 | 63-98 | .391 | 0.643 | 107.27 | 4 | ||||
| 27 | Detroit Tigers | AC | 57.428 | .3644 | .3502 | 64-98 | .395 | 0.653 | 87.936 | 28 | ||||
| 28 | Chicago White Sox | AC | 54.963 | .3542 | .3405 | 62-100 | .383 | 0.620 | 88.650 | 27 | ||||
| 29 | Kansas City Royals | AC | 49.759 | .3315 | .3191 | 58-104 | .358 | 0.558 | 89.222 | 26 | ||||
| 30 | Baltimore Orioles | AE | 42.870 | .2989 | .3063 | 47-115 | .290 | 0.409 | 104.89 | 9 |
| Rk | Division | BSWP | Tms | Top Team |
| 1 | American League West (AW) | .5522 | 5 | Houston Astros (2) |
| 2 | National League Central (NC) | .5392 | 5 | Milwaukee Brewers (5) |
| 3 | National League West (NW) | .5185 | 5 | Los Angeles Dodgers (7) |
| 4 | American League East (AE) | .5125 | 5 | Boston Red Sox (1) |
| 5 | National League East (NE) | .4904 | 5 | Atlanta Braves (9) |
| 6 | American League Central (AC) | .3871 | 5 | Cleveland Indians (14) |