highest era by a franchise all-time with at least 4000 games

The Colorado Rockies have the worst ERA by a team when pitching in 4,000+ games, with an ERA of 5.05.

	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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	Angels	4.02	10,301	.495	5,093	5,205	10,301	64,708	1,307	347	2,399	92039.0	89,256	41,094	45,379	9,931	34,836	3,034	2,379	393,309	3,588	6.33	3.41	1.86	0.97	16.5	8.9	1.35	.282	4.44	8.73
12	Athletics	4.00	19,437	.486	9,405	9,945	19,437	95,593	5,699	853	3,114	173229.1	172,376	77,074	88,915	14,390	67,092	5,014	2,694	743,496	5,352	4.97	3.49	1.42	0.75	12.9	9.0	1.38	.281	4.62	8.96
13	Twins	4.00	19,485	.481	9,329	10,047	19,485	95,787	5,847	882	3,101	173588.0	176,883	77,167	88,997	14,188	61,515	4,736	2,258	743,402	5,088	4.97	3.19	1.56	0.74	12.9	8.3	1.37	.287	4.61	9.17
14	Tigers	4.00	19,498	.503	9,763	9,642	19,498	96,630	6,176	902	2,998	173886.0	175,210	77,245	89,205	14,742	64,848	5,246	2,952	746,601	5,041	5.00	3.36	1.49	0.76	12.9	8.7	1.38	.284	4.62	9.07
15	Phillies	3.98	21,810	.475	10,303	11,392	21,810	105,559	7,666	927	2,981	194123.1	199,926	85,939	102,500	14,718	67,944	5,826	3,589	835,692	5,726	4.89	3.15	1.55	0.68	12.6	8.1	1.38	.289	4.75	9.27
16	Nationals	3.97	9,000	.481	4,331	4,665	9,000	58,430	790	251	2,187	80386.1	78,089	35,494	39,348	8,275	29,542	2,676	2,722	343,729	2,756	6.54	3.31	1.98	0.93	17.0	8.6	1.34	.285	4.41	8.74
17	Padres	3.96	9,008	.468	4,217	4,789	9,008	59,059	668	203	2,177	80555.1	78,147	35,417	39,338	8,376	29,731	2,364	3,093	344,265	2,724	6.60	3.32	1.99	0.94	17.2	8.6	1.34	.285	4.40	8.73
18	Red Sox	3.92	19,463	.518	10,044	9,336	19,463	100,549	5,918	913	3,198	173813.2	174,458	75,758	87,231	13,709	63,295	5,202	2,504	744,221	4,526	5.21	3.28	1.59	0.71	13.5	8.5	1.37	.286	4.52	9.03
19	Guardians	3.83	19,474	.513	9,940	9,443	19,474	100,245	6,084	983	3,112	173963.0	172,564	74,009	85,719	13,311	64,535	4,737	2,837	742,574	4,865	5.19	3.34	1.55	0.69	13.5	8.7	1.36	.285	4.43	8.93
20	Mets	3.81	10,134	.484	4,899	5,227	10,134	67,452	1,095	333	2,267	90657.2	86,954	38,359	42,670	8,913	32,342	2,777	3,181	385,500	2,863	6.70	3.21	2.09	0.88	17.5	8.4	1.32	.285	4.24	8.63
21	White Sox	3.80	19,471	.498	9,654	9,714	19,471	95,727	5,938	1,015	3,262	174043.0	171,731	73,542	84,748	13,708	62,269	4,598	2,558	740,433	4,863	4.95	3.22	1.54	0.71	12.9	8.4	1.34	.280	4.38	8.88
22	Astros	3.80	10,141	.503	5,096	5,040	10,141	69,636	1,138	343	2,282	90824.0	86,564	38,344	42,525	8,677	32,135	2,779	2,652	385,643	3,374	6.90	3.18	2.17	0.86	18.1	8.3	1.31	.286	4.21	8.58
23	Reds	3.77	22,001	.504	11,017	10,845	22,001	103,756	7,854	938	3,331	196279.1	196,034	82,229	97,935	14,602	67,403	5,766	3,539	837,269	5,504	4.76	3.09	1.54	0.67	12.4	8.1	1.34	.281	4.49	8.99
24	Pirates	3.76	21,960	.500	10,910	10,910	21,960	101,082	7,797	979	3,181	195643.1	197,458	81,698	97,858	13,196	65,428	5,669	3,957	835,239	5,597	4.65	3.01	1.54	0.61	12.1	7.8	1.34	.284	4.50	9.08
25	Cardinals	3.74	20,768	.513	10,583	10,054	20,768	99,005	6,822	996	3,346	185500.0	185,786	77,098	91,011	13,242	63,993	5,292	3,599	790,755	4,930	4.80	3.10	1.55	0.64	12.5	8.1	1.35	.283	4.42	9.01