Data courtesy ESPN.com. Ratings current through 29 October 2008 (2460 games).
| Rk | Team | Div. | Z-Rating | BSWP | Record | Pct | Ratio | SOS | Rk | ||||
| 1 | Tampa Bay Rays | AE | 174.56 | .6373 | 105-73 | .590 | 1.438 | 121.36 | 3 | ||||
| 2 | LA Angels of Anaheim | AW | 171.41 | .6331 | 101-65 | .608 | 1.554 | 110.32 | 13 | ||||
| 3 | Boston Red Sox | AE | 170.66 | .6320 | 101-72 | .584 | 1.403 | 121.66 | 2 | ||||
| 4 | New York Yankees | AE | 145.32 | .5933 | 89-73 | .549 | 1.219 | 119.19 | 5 | ||||
| 5 | Toronto Blue Jays | AE | 136.25 | .5775 | 86-76 | .531 | 1.132 | 120.41 | 4 | ||||
| 6 | Chicago White Sox | AC | 134.27 | .5739 | 90-77 | .539 | 1.169 | 114.88 | 6 | ||||
| 7 | Chicago Cubs | NC | 129.86 | .5656 | 97-67 | .591 | 1.448 | 89.698 | 21 | ||||
| 8 | Minnesota Twins | AC | 129.36 | .5646 | 88-75 | .540 | 1.173 | 110.25 | 14 | ||||
| 9 | Philadelphia Phillies | NE | 126.28 | .5587 | 103-73 | .585 | 1.411 | 89.502 | 23 | ||||
| 10 | Cleveland Indians | AC | 110.66 | .5256 | 81-81 | .500 | 1.000 | 110.66 | 12 | ||||
| 11 | Milwaukee Brewers | NC | 109.70 | .5234 | 91-75 | .548 | 1.213 | 90.412 | 20 | ||||
| 12 | Texas Rangers | AW | 108.10 | .5197 | 79-83 | .488 | 0.952 | 113.58 | 10 | ||||
| 13 | Houston Astros | NC | 105.67 | .5139 | 86-75 | .534 | 1.147 | 92.151 | 17 | ||||
| 14 | New York Mets | NE | 105.61 | .5138 | 89-73 | .549 | 1.219 | 86.626 | 25 | ||||
| 15 | St. Louis Cardinals | NC | 102.65 | .5066 | 86-76 | .531 | 1.132 | 90.710 | 19 | ||||
| 16 | Oakland Athletics | AW | 99.794 | .4995 | 75-86 | .466 | 0.872 | 114.43 | 7 | ||||
| 17 | Kansas City Royals | AC | 98.240 | .4955 | 75-87 | .463 | 0.862 | 113.96 | 9 | ||||
| 18 | Florida Marlins | NE | 95.832 | .4893 | 84-77 | .522 | 1.091 | 87.846 | 24 | ||||
| 19 | Detroit Tigers | AC | 95.036 | .4871 | 74-88 | .457 | 0.841 | 113.02 | 11 | ||||
| 20 | Los Angeles Dodgers | NW | 91.970 | .4789 | 88-82 | .518 | 1.073 | 85.700 | 27 | ||||
| 21 | Baltimore Orioles | AE | 90.129 | .4738 | 68-93 | .422 | 0.731 | 123.26 | 1 | ||||
| 22 | Arizona Diamondbacks | NW | 85.256 | .4598 | 82-80 | .506 | 1.025 | 83.177 | 30 | ||||
| 23 | Cincinnati Reds | NC | 78.960 | .4406 | 74-88 | .457 | 0.841 | 93.899 | 16 | ||||
| 24 | Atlanta Braves | NE | 71.648 | .4166 | 72-90 | .444 | 0.800 | 89.560 | 22 | ||||
| 25 | Colorado Rockies | NW | 70.775 | .4135 | 74-88 | .457 | 0.841 | 84.165 | 29 | ||||
| 26 | Seattle Mariners | AW | 69.082 | .4076 | 61-101 | .377 | 0.604 | 114.38 | 8 | ||||
| 27 | San Francisco Giants | NW | 67.651 | .4025 | 72-90 | .444 | 0.800 | 84.564 | 28 | ||||
| 28 | Pittsburgh Pirates | NC | 66.852 | .3996 | 67-95 | .414 | 0.705 | 94.790 | 15 | ||||
| 29 | San Diego Padres | NW | 54.674 | .3518 | 63-99 | .389 | 0.636 | 85.916 | 26 | ||||
| 30 | Washington Nationals | NE | 53.067 | .3449 | 59-102 | .366 | 0.578 | 91.743 | 18 |
| Division | BSWP | Tms | Top Team | |
| 1 | American League East (AE) | .5961 | 5 | Tampa Bay Rays (1) |
| 2 | American League Central (AC) | .5340 | 5 | Chicago White Sox (6) |
| 3 | American League West (AW) | .5167 | 4 | LA Angels of Anaheim (2) |
| 4 | National League Central (NC) | .4899 | 6 | Chicago Cubs (7) |
| 5 | National League East (NE) | .4590 | 5 | Philadelphia Phillies (9) |
| 6 | National League West (NW) | .4087 | 5 | Los Angeles Dodgers (20) |