Rank | Team | Earned Run Average | Record |
1. | Texas Rangers, 2003 | 6.5397 | 57-105 |
2. | Seattle Mariners, 1977 | 6.2795 | 52-110 |
3. | Texas Rangers, 2000 | 6.1711 | 61-101 |
4. | Colorado Rockies, 1999 | 6.1596 | 58-104 |
5. | Texas Rangers, 2008 | 6.1246 | 55-107 |
6. | Colorado Rockies, 1994 | 6.1076 | 60-102 |
7. | Colorado Rockies, 2004 | 6.0933 | 63-99 |
8. | Milwaukee Brewers, 1995 | 6.0477 | 64-98 |
9. | Oakland A's, 1977 | 6.0339 | 47-115 |
10. | Texas Rangers, 2002 | 6.0166 | 66-96 |
11. | Toronto Blue Jays, 2009 | 5.9782 | 48-114 |
12. | Colorado Rockies, 1996 | 5.9428 | 75-87 |
13. | Minnesota Twins, 1996 | 5.9195 | 76-86 |
14. | Texas Rangers, 2001 | 5.8950 | 64-98 |
15. | Colorado Rockies, 1998 | 5.8607 | 60-102 |
16. | Milwaukee Brewers, 1999 | 5.7718 | 65-97 |
17. | Detroit Tigers, 1994 | 5.7617 | 73-89 |
18. | Kansas City Royals, 2000 | 5.7524 | 56-106 |
19. | Minnesota Twins, 1994 | 5.7242 | 73-89 |
20. | Baltimore Orioles, 2000 | 5.7125 | 66-96 |
21. | St. Louis Cardinals, 2000 | 5.7057 | 61-101 |
22. | Texas Rangers, 2006 | 5.6978 | 70-92 |
23. | Milwaukee Brewers, 2009 | 5.6762 | 47-115 |
24. | Chicago White Sox, 1985 | 5.6354 | 53-109 |
25. | Colorado Rockies, 2002 | 5.6294 | 54-108 |
26. | Toronto Blue Jays, 2001 | 5.6219 | 54-108 |
27. | Oakland A's, 1997 | 5.6151 | 62-100 |
28. | Baltimore Orioles, 1987 | 5.6012 | 59-103 |
29. | Minnesota Twins, 1975 | 5.5824 | 63-99 |
30. | Colorado Rockies, 2001 | 5.5805 | 73-89 |
31. | Seattle Mariners, 1979 | 5.5800 | 68-94 |
32. | St. Louis Cardinals, 1994 | 5.5642 | 67-95 |
33. | St. Louis Browns, 1936 | 5.5557 | 73-81 |
34. | Colorado Rockies, 2000 | 5.5473 | 85-77 |
35. | Chicago White Sox, 1998 | 5.5369 | 69-93 |
36. | Seattle Mariners, 2007 | 5.5364 | 59-103 |
37. | Milwaukee Brewers, 1994 | 5.5353 | 60-102 |
38. | Toronto Blue Jays, 2004 | 5.5283 | 60-102 |
39. | Baltimore Orioles, 2002 | 5.5202 | 57-105 |
40. | Texas Rangers, 2004 | 5.5192 | 74-88 |
41. | Milwaukee Brewers, 2001 | 5.4926 | 79-83 |
42. | Florida Marlins, 1994 | 5.4889 | 65-97 |
43. | Detroit Tigers, 1995 | 5.4854 | 66-96 |
44. | Texas Rangers, 1997 | 5.4760 | 80-82 |
45. | Boston Red Sox, 2001 | 5.4713 | 60-102 |
46. | St. Louis Cardinals, 1956 | 5.4527 | 48-106 |
47. | Washington Nationals, 2006 | 5.4466 | 57-105 |
48. | Seattle Mariners, 2010 | 5.4414 | 40-122 |
49. | Baltimore Orioles, 2007 | 5.4362 | 60-102 |
50. | Detroit Tigers, 1999 | 5.4296 | 75-87 |