Data courtesy ESPN.com. Ratings current through 30 October 2013 (2469 games).
| Rank | Team | Div. | Z-Rating | BSWP | nDWP | Record | Pct | Ratio | SOS | Rank | ||||
| 1 | Boston Red Sox | AE | 165.06 | .6245 | .6307 | 108-70 | .607 | 1.543 | 106.98 | 4 | ||||
| 2 | St. Louis Cardinals | NC | 145.13 | .5934 | .5936 | 106-73 | .592 | 1.452 | 99.946 | 15 | ||||
| 3 | Oakland Athletics | AW | 137.07 | .5793 | .5721 | 98-69 | .587 | 1.420 | 96.511 | 27 | ||||
| 4 | Tampa Bay Rays | AE | 135.78 | .5769 | .5851 | 94-74 | .560 | 1.270 | 106.89 | 5 | ||||
| 5 | Pittsburgh Pirates | NC | 134.95 | .5754 | .5763 | 97-71 | .577 | 1.366 | 98.781 | 21 | ||||
| 6 | Detroit Tigers | AC | 131.60 | .5692 | .5657 | 98-75 | .566 | 1.307 | 100.71 | 11 | ||||
| 7 | Atlanta Braves | NE | 129.21 | .5646 | .5563 | 97-69 | .584 | 1.406 | 91.911 | 30 | ||||
| 8 | Cleveland Indians | AC | 127.18 | .5606 | .5574 | 92-71 | .564 | 1.296 | 98.152 | 23 | ||||
| 9 | Los Angeles Dodgers | NW | 126.74 | .5598 | .5555 | 97-75 | .564 | 1.293 | 97.997 | 24 | ||||
| 10 | Texas Rangers | AW | 122.84 | .5520 | .5456 | 91-72 | .558 | 1.264 | 97.195 | 25 | ||||
| 11 | Cincinnati Reds | NC | 122.17 | .5506 | .5523 | 90-73 | .552 | 1.233 | 99.092 | 17 | ||||
| 12 | Baltimore Orioles | AE | 120.44 | .5470 | .5563 | 85-77 | .525 | 1.104 | 109.10 | 2 | ||||
| 13 | New York Yankees | AE | 119.64 | .5453 | .5547 | 85-77 | .525 | 1.104 | 108.38 | 3 | ||||
| 14 | Kansas City Royals | AC | 113.27 | .5315 | .5293 | 86-76 | .531 | 1.132 | 100.10 | 14 | ||||
| 15 | Washington Nationals | NE | 105.35 | .5132 | .5065 | 86-76 | .531 | 1.132 | 93.098 | 29 | ||||
| 16 | Arizona Diamondbacks | NW | 99.071 | .4976 | .4956 | 81-81 | .500 | 1.000 | 99.071 | 18 | ||||
| 17 | Toronto Blue Jays | AE | 93.993 | .4843 | .4958 | 74-88 | .457 | 0.841 | 111.78 | 1 | ||||
| 18 | LA Angels of Anaheim | AW | 92.658 | .4807 | .4764 | 78-84 | .481 | 0.929 | 99.785 | 16 | ||||
| 19 | San Francisco Giants | NW | 88.673 | .4696 | .4686 | 76-86 | .469 | 0.884 | 100.34 | 13 | ||||
| 20 | San Diego Padres | NW | 87.411 | .4660 | .4651 | 76-86 | .469 | 0.884 | 98.913 | 19 | ||||
| 21 | Milwaukee Brewers | NC | 84.591 | .4577 | .4626 | 74-88 | .457 | 0.841 | 100.59 | 12 | ||||
| 22 | Colorado Rockies | NW | 83.110 | .4533 | .4528 | 74-88 | .457 | 0.841 | 98.833 | 20 | ||||
| 23 | New York Mets | NE | 80.315 | .4447 | .4404 | 74-88 | .457 | 0.841 | 95.509 | 28 | ||||
| 24 | Philadelphia Phillies | NE | 79.504 | .4421 | .4379 | 73-89 | .451 | 0.820 | 96.930 | 26 | ||||
| 25 | Seattle Mariners | AW | 78.875 | .4402 | .4372 | 71-91 | .438 | 0.780 | 101.09 | 10 | ||||
| 26 | Minnesota Twins | AC | 70.804 | .4134 | .4150 | 66-96 | .407 | 0.688 | 102.99 | 7 | ||||
| 27 | Chicago Cubs | NC | 70.275 | .4115 | .4179 | 66-96 | .407 | 0.688 | 102.22 | 9 | ||||
| 28 | Chicago White Sox | AC | 65.343 | .3937 | .3961 | 63-99 | .389 | 0.636 | 102.68 | 8 | ||||
| 29 | Miami Marlins | NE | 60.970 | .3770 | .3753 | 62-100 | .383 | 0.620 | 98.339 | 22 | ||||
| 30 | Houston Astros | AW | 48.709 | .3249 | .3260 | 51-111 | .315 | 0.459 | 106.01 | 6 |
| Rk | Division | BSWP | Tms | Top Team |
| 1 | American League East (AE) | .5645 | 5 | Boston Red Sox (1) |
| 2 | National League Central (NC) | .5205 | 5 | St. Louis Cardinals (2) |
| 3 | American League Central (AC) | .4927 | 5 | Detroit Tigers (6) |
| 4 | National League West (NW) | .4875 | 5 | Los Angeles Dodgers (9) |
| 5 | American League West (AW) | .4715 | 5 | Oakland Athletics (3) |
| 6 | National League East (NE) | .4633 | 5 | Atlanta Braves (7) |