highest era by a pitcher with at least 15 wins in a season

Wes Ferrell has the highest ERA with 15+ pitcher wins in a season, with an ERA of 6.28 in 1938.

	NAME	ERA	W	SEASON	TM	L	W%	G	GS	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Wes Ferrell W. Ferrell	6.28	15	1938	TOT	10	.600	28	26	43	10	0	0	179.0	245	125	144	18	86	1	2		848	5	2.16	4.32	0.50	0.91	5.1	10.1	1.85	.324	7.24	138	5.21	119	12.32	-18.1
2	Guy Bush G. Bush	6.20	15	1930	CHC	10	.600	46	25	75	11	0	3	225.0	291	155	174	22	86	2	8		1,031	12	3.00	3.44	0.87	0.88	7.3	8.3	1.68	.318	6.96	126	5.28	108	11.64	-10.5
3	Ad Gumbert A. Gumbert	6.04	15	1894	PIT	14	.517	38	32	67	26	0	0	271.0	376	182	245	14	85	6	5		1,247	2	2.23	2.82	0.79	0.46	5.4	6.8	1.70	.337	8.14	117	5.00	97	12.49	3
4	Shawn Estes S. Estes	5.84	15	2004	COL	8	.652	34	34	117	1	0	0	202.0	223	131	133	30	105	11	0	5	904	4	5.21	4.68	1.11	1.34	12.9	11.6	1.62	.301	5.93	121	5.54	119	9.94	-17.9
5	Bill Hawke B. Hawke	5.81	16	1894	BAL	9	.640	32	25	68	17	0	3	206.0	264	133	174	9	78	12	7		947	2	2.97	3.41	0.87	0.39	7.2	8.2	1.66	.327	7.60	107	5.03	93	11.53	10
6	Duke Esper D. Esper	5.81	15	1894	TOT	12	.556	34	23	49	15	0	2	217.0	284	140	188	9	75	3	10		987	1	2.03	3.11	0.65	0.37	5.0	7.6	1.65	.323	7.80	108	4.98	93	11.78	9.9
7	Gus Weyhing G. Weyhing	5.71	16	1894	PHI	14	.533	40	36	83	26	2	1	279.0	379	177	224	12	120	15	4		1,317	5	2.68	3.87	0.69	0.39	6.3	9.1	1.79	.338	7.23	107	5.23	98	12.23	3
8	Con Lucid C. Lucid	5.66	16	1895	TOT	10	.615	31	29	43	19	3	0	206.2	244	130	169	7	107	16	2		966	4	1.87	4.66	0.40	0.30	4.5	11.1	1.70	.299	7.36	124	5.39	118	10.63	-22.6
9	Tom Parrott T. Parrott	5.60	17	1894	CIN	19	.472	41	36	61	31	1	1	308.2	402	192	268	19	126	11	5		1,428	8	1.78	3.67	0.48	0.55	4.3	8.8	1.71	.316	7.81	102	5.55	101	11.72	0.2
10	Kid Carsey K. Carsey	5.52	18	1894	PHI	12	.600	37	32	43	26	0	0	288.1	366	177	241	22	106	17	4		1,319	15	1.34	3.31	0.41	0.69	3.3	8.0	1.64	.304	7.52	104	5.79	109	11.42	-14.8
11	Hank Gastright H. Gastright	5.44	15	1893	TOT	5	.750	28	23	39	19	0	0	215.0	253	130	171	12	115	12	5		1,017	9	1.63	4.81	0.34	0.50	3.8	11.3	1.71	.287	7.16	114	5.38	113	10.59	-13.3
12	Kirk Rueter K. Rueter	5.41	15	1999	SFG	10	.600	33	33	94	1	0	0	184.2	219	111	118	28	55	2	0	2	804	2	4.58	2.68	1.71	1.36	11.7	6.8	1.48	.306	5.75	124	5.00	109	10.67	-9
13	Bobby Witt B. Witt	5.41	16	1996	TEX	12	.571	33	32	157	2	0	0	199.2	235	120	129	28	96	2	1	3	903	4	7.08	4.33	1.64	1.26	17.4	10.6	1.66	.334	5.81	105	4.89	99	10.59	0.6
14	Noble LaMaster N. LaMaster	5.31	15	1937	PHN	19	.441	50	30	135	10	1	4	220.1	255	130	139	24	82	2	11		974	1	5.51	3.35	1.65	0.98	13.9	8.4	1.53	.316	5.68	120	4.37	97	10.42	5
15	Jouett Meekin J. Meekin	5.30	16	1895	NYG	11	.593	29	29	76	24	1	0	225.2	296	133	170	10	73	9	0		1,032	8	3.03	2.91	1.04	0.40	7.4	7.1	1.64	.331	6.78	113	4.57	98	11.81	1.6
16	Kevin Ritz K. Ritz	5.28	17	1996	COL	11	.607	35	35	105	2	0	0	213.0	236	125	135	24	105	12	0	3	966	10	4.44	4.44	1.00	1.01	10.9	10.9	1.60	.294	5.70	102	5.29	111	9.97	-10.1
17	Dan Spillner D. Spillner	5.28	16	1980	CLE	11	.593	34	30	100	7	1	0	194.1	225	114	122	23	74	3	1	2	865	10	4.63	3.43	1.35	1.07	11.6	8.6	1.54	.304	5.65	131	4.44	110	10.42	-8.9
18	Roxie Lawson R. Lawson	5.26	18	1937	DET	7	.720	37	29	68	15	0	1	217.1	236	127	141	17	115	1	5		995	6	2.82	4.76	0.59	0.70	6.8	11.6	1.62	.276	5.84	113	5.03	110	9.77	-10.6
19	Charles Nagy C. Nagy	5.22	15	1998	CLE	10	.600	33	33	120	2	0	0	210.1	250	122	139	34	66	9	0	12	930	3	5.13	2.82	1.82	1.45	12.9	7.1	1.50	.308	5.95	110	5.16	113	10.70	-13.9
20	Ramon Ortiz R. Ortiz	5.20	16	2003	ANA	13	.552	32	32	94	1	0	0	180.0	209	104	121	28	63	12	0	0	814	4	4.70	3.15	1.49	1.40	11.5	7.7	1.51	.293	6.05	117	5.25	119	10.45	-17
21	Roger Pavlik R. Pavlik	5.19	15	1996	TEX	8	.652	34	34	127	7	0	0	201.0	216	116	120	28	81	5	0	5	877	8	5.69	3.63	1.57	1.25	14.5	9.2	1.48	.296	5.37	101	4.99	102	9.67	-1.8
22	Mel Harder M. Harder	5.17	15	1936	CLE	15	.500	36	30	84	13	0	1	224.2	294	129	155	13	71	6	6		1,031	4	3.36	2.84	1.18	0.52	8.1	6.9	1.62	.328	6.21	103	4.30	89	11.78	12.9
23	Kevin Appier K. Appier	5.17	16	1999	TOT	14	.533	34	34	131	1	0	0	209.0	230	120	131	27	84	7	0	4	926	10	5.64	3.62	1.56	1.16	14.1	9.1	1.50	.300	5.64	105	4.86	100	9.90	0.2
24	Red Ehret R. Ehret	5.14	19	1894	PIT	21	.475	46	38	102	31	1	0	346.2	441	198	269	12	128	10	8		1,577	5	2.65	3.32	0.80	0.31	6.5	8.1	1.64	.324	6.98	99	4.87	94	11.45	9
25	Harry Staley H. Staley	5.13	18	1893	BSN	10	.643	36	31	61	23	0	0	263.0	344	150	224	22	81	6	4		1,209	10	2.09	2.77	0.75	0.75	5.0	6.7	1.62	.310	7.67	106	4.86	100	11.77	1.9