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Single-Season Team Leaders in Earned Run Average
Show bottom 50

Rank	Team	Earned Run Average	Record
1.	St. Louis Cardinals, 1968	2.5375	105-57
2.	Detroit Tigers, 1968	2.6296	99-63
3.	Brooklyn Dodgers, 1942	2.6348	102-52
4.	New York Mets, 1969	2.6352	106-56
5.	St. Louis Cardinals, 1943	2.6405	102-52
6.	San Diego Padres, 1978	2.6659	101-61
7.	Chicago White Sox, 1967	2.6988	88-74
8.	Boston Red Sox, 1942	2.7214	102-52
9.	Chicago White Sox, 1952	2.7261	101-53
10.	Los Angeles Dodgers, 1973	2.7335	109-54
11.	San Francisco Giants, 1968	2.7371	103-59
12.	Chicago White Sox, 1943	2.7390	87-67
13.	Cincinnati Reds, 1943	2.7577	90-64
14.	Pittsburgh Pirates, 1968	2.7612	80-82
15.	Washington Senators, 1945	2.7701	85-69
16.	Los Angeles Dodgers, 1965	2.7749	84-78
17.	Baltimore Orioles, 1968	2.7886	82-80
18.	Washington Senators, 1942	2.7978	84-70
19.	Cincinnati Reds, 1974	2.8080	100-62
20.	Brooklyn Dodgers, 1952	2.8182	117-37
21.	Pittsburgh Pirates, 1991	2.8216	103-59
22.	New York Mets, 1968	2.8269	87-75
23.	Washington Senators, 1952	2.8279	84-70
24.	St. Louis Cardinals, 1967	2.8389	98-64
25.	Boston Red Sox, 1976	2.8539	108-54
26.	Montreal Expos, 1980	2.8586	118-44
27.	San Diego Padres, 2007	2.8593	112-50
28.	Montreal Expos, 1992	2.8594	96-66
29.	Cincinnati Reds, 1976	2.8695	113-49
30.	New York Mets, 1988	2.9002	104-58
31.	Pittsburgh Pirates, 1943	2.9021	71-83
32.	Oakland A's, 1968	2.9087	84-78
33.	Boston Red Sox, 1986	2.9142	109-53
34.	Cincinnati Reds, 1967	2.9222	103-59
35.	Detroit Tigers, 1943	2.9317	73-81
36.	Detroit Tigers, 1946	2.9384	104-51
37.	Washington Senators, 1943	2.9405	85-69
38.	Montreal Expos, 1982	2.9413	108-54
39.	Cincinnati Reds, 1964	2.9453	98-65
40.	Washington Senators, 1954	2.9462	87-67
41.	New York Yankees, 1943	2.9481	88-66
42.	San Francisco Giants, 1966	2.9525	98-64
43.	Cincinnati Reds, 1972	2.9558	106-56
44.	San Diego Padres, 1984	2.9591	104-58
45.	Montreal Expos, 1985	2.9627	101-61
46.	Washington Senators, 1944	2.9645	95-59
47.	Cincinnati Reds, 1946	2.9662	87-67
48.	Atlanta Braves, 1968	2.9682	74-88
49.	Los Angeles Dodgers, 1976	2.9692	77-85
50.	San Francisco Giants, 1989	2.9713	91-71

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