The Buffalo Bisons have the worst ERA by a team, with an ERA of 6.11.

	TEAM	ERA	G	W%	W	L	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Bisons	6.11	134	.273	36	96	134	351	125		0	1141.0	1,499	775	1,199	67	673	48		5,658	78	2.77	5.31	0.52	0.53	6.2	11.9	1.90	.317	9.46	11.82
2	Rockies	5.05	5,182	.456	2,364	2,818	5,182	34,280	118	34	1,169	45801.2	49,867	25,678	27,680	6,131	18,245	1,962	1,351	202,088	1,954	6.74	3.59	1.88	1.20	17.0	9.0	1.49	.309	5.44	9.80
3	Stars	4.98	128	.433	55	72	128	454	115		0	1089.2	1,158	603	831	28	518	65		4,967	57	3.75	4.28	0.88	0.23	9.1	10.4	1.54	.290	6.86	9.56
4	Cowboys	4.85	126	.248	30	91	126	442	117		0	1066.2	1,345	575	872	27	246			4,805	95	3.73	2.08	1.80	0.23	9.2	5.1	1.49		7.36	11.35
5	Senators	4.72	1,265	.366	454	788	1,265	3,047	1,031		24	10745.2	13,330	5,635	8,777	367	4,319	651		49,546	411	2.55	3.62	0.71	0.31	6.1	8.7	1.64	.315	7.35	11.16
6	Gladiators	4.71	100	.263	26	73	100	230	96		0	879.0	1,011	460	733	21	421	57		4,093	69	2.35	4.31	0.55	0.22	5.6	10.3	1.63	.294	7.51	10.35
7	Mountain City	4.67	25	.240	6	19	25	93	20		0	219.2	292	114	216	3	52			1,027	14	3.81	2.13	1.79	0.12	9.1	5.1	1.57		8.85	11.96
8	Keystones	4.63	67	.313	21	46	67	310	64		0	593.1	726	305	545	7	105			2,677	80	4.70	1.59	2.95	0.11	11.6	3.9	1.40		8.27	11.01
9	Hoosiers	4.62	398	.370	146	249	398	1,041	359		3	3450.0	3,914	1,770	2,590	197	1,159	130		15,442	228	2.72	3.02	0.90	0.51	6.7	7.5	1.47	.288	6.76	10.21
10	Virginians	4.52	46	.286	12	30	46	167	45		0	370.1	402	186	294	14	52	17		1,634	19	4.06	1.26	3.21	0.34	10.2	3.2	1.23	.280	7.14	9.77
11	Cowboys	4.32	271	.364	98	171	271	828	256		2	2362.0	2,679	1,135	1,927	83	858	126		10,688	199	3.15	3.27	0.97	0.32	7.7	8.0	1.50	.295	7.34	10.21
12	Marlins	4.31	5,174	.460	2,382	2,792	5,174	37,633	157	67	1,237	46045.1	45,538	22,039	24,049	5,102	18,490	1,937	1,597	199,347	1,686	7.36	3.61	2.04	1.00	18.9	9.3	1.39	.297	4.70	8.90
13	Diamondbacks	4.29	4,434	.489	2,167	2,267	4,434	33,642	138	55	1,070	39603.2	39,153	18,871	20,575	5,004	14,021	1,548	1,051	169,844	1,498	7.65	3.19	2.40	1.14	19.8	8.3	1.34	.295	4.68	8.90
14	Mariners	4.28	7,713	.478	3,689	4,022	7,713	50,972	587	152	1,854	68758.0	68,486	32,727	35,871	8,178	25,528	2,450	1,806	295,508	2,577	6.67	3.34	2.00	1.07	17.2	8.6	1.37	.289	4.70	8.96
15	Rangers	4.28	10,288	.476	4,899	5,383	10,288	62,366	1,192	286	2,235	91628.1	92,080	43,533	48,297	10,130	35,270	3,093	2,361	395,793	3,411	6.13	3.46	1.77	0.99	15.8	8.9	1.39	.288	4.74	9.04
16	Royals	4.25	8,995	.477	4,290	4,703	8,995	53,343	955	240	2,065	80054.0	81,310	37,818	41,467	8,499	29,383	2,559	1,896	344,658	3,115	6.00	3.30	1.82	0.96	15.5	8.5	1.38	.290	4.66	9.14
17	Infants	4.23	131	.423	55	75	131	325	115		0	1143.2	1,386	537	1,027	45	571	55		5,460	86	2.56	4.49	0.57	0.35	6.0	10.5	1.71	.300	8.08	10.91
18	Blue Jays	4.22	7,714	.500	3,855	3,856	7,714	50,738	652	163	1,806	68831.1	68,284	32,253	35,274	8,027	25,497	2,476	1,635	295,453	2,449	6.63	3.33	1.99	1.05	17.2	8.6	1.36	.289	4.61	8.93
19	Burghers	4.22	128	.469	60	68	128	318	121		0	1116.2	1,267	523	892	32	334	40		5,144	52	2.56	2.69	0.95	0.26	6.2	6.5	1.43	.279	7.19	10.21
20	Rays	4.21	4,432	.489	2,168	2,264	4,432	33,474	106	41	1,133	39452.0	37,975	18,458	20,143	4,973	14,295	1,705	764	168,564	1,598	7.64	3.26	2.34	1.13	19.9	8.5	1.32	.289	4.60	8.66
21	Hoosiers	4.20	110	.271	29	78	110	479	107		0	937.2	1,000	438	755	30	199	28		4,160	75	4.60	1.91	2.41	0.29	11.5	4.8	1.28	.283	7.25	9.60
22	Giants	4.17	132	.565	74	57	132	449	111		6	1172.1	1,216	543	875	37	569	53		5,372	77	3.45	4.37	0.79	0.28	8.4	10.6	1.52	.277	6.72	9.34
23	Nationals	4.16	514	.326	163	337	514	1,690	485		0	4413.2	4,781	2,042	3,240	168	1,503	129		19,523	280	3.45	3.06	1.12	0.34	8.7	7.7	1.42	.288	6.61	9.75
24	Brewers	4.13	9,004	.489	4,405	4,595	9,004	55,802	929	208	2,191	80339.1	80,017	36,884	40,753	9,045	29,711	2,598	2,289	345,244	2,803	6.25	3.33	1.88	1.01	16.2	8.6	1.37	.286	4.57	8.96
25	Orioles	4.05	19,476	.475	9,195	10,171	19,476	92,824	5,887	889	3,009	173643.1	175,593	78,231	89,562	14,735	65,418	4,606	2,459	744,617	4,615	4.81	3.39	1.42	0.76	12.5	8.8	1.39	.284	4.64	9.10