worst single season era by a starting pitcher with at least 10 wins

Colby Lewis has the highest ERA by a starting pitcher with 10+ pitcher wins in a season, with an ERA of 7.30 in his rookie season in 2003.

	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	H/9
1	Colby Lewis C. Lewis	7.30	10	2003	TEX	9	.526	26	26	88	0	0	0	127.0	163	103	104	23	70	5	0	1	594	5	6.24	4.96	1.26	1.63	14.8	11.8	1.83	.343	7.37	11.55
2	Antonio Senzatela A. Senzatela	6.71	11	2019	COL	11	.500	25	25	76	0	0	0	124.2	161	93	99	19	57	4	0	5	582	1	5.49	4.11	1.33	1.37	13.1	9.8	1.75	.333	7.15	11.62
3	LaTroy Hawkins L. Hawkins	6.66	10	1999	MIN	14	.417	33	33	103	1	0	0	174.1	238	129	136	29	60	1	0	2	803	9	5.32	3.10	1.72	1.50	12.8	7.5	1.71	.343	7.02	12.29
4	Ryan Drese R. Drese	6.55	10	2002	CLE	9	.526	26	26	102	1	0	0	137.1	176	100	104	15	62	6	0	1	635	11	6.68	4.06	1.65	0.98	16.1	9.8	1.73	.358	6.82	11.53
5	Dave Burba D. Burba	6.54	10	2001	CLE	10	.500	27	27	104	1	0	0	137.2	179	100	108	15	51	3	0	2	636	6	6.80	3.33	2.04	0.98	16.4	8.0	1.67	.354	7.06	11.70
6	Mike Morgan M. Morgan	6.51	11	1999	TEX	8	.579	25	25	50	1	0	0	123.0	162	89	100	22	45	6	0	2	558	2	3.66	3.29	1.11	1.61	9.0	8.1	1.68	.322	7.32	11.85
7	Wes Ferrell W. Ferrell	6.45	14	1938	TOT	10	.583	26	26	43	10	0	0	173.0	239	124	143	19	81	1	0		823	4	2.24	4.21	0.53	0.99	5.2	9.8	1.85	.324	7.44	12.43
8	John Lackey J. Lackey	6.41	12	2011	BOS	12	.500	28	28	108	0	0	0	160.0	203	114	119	20	56	19	0	1	743	11	6.08	3.15	1.93	1.13	14.5	7.5	1.62	.339	6.69	11.42
9	Manny Parra M. Parra	6.36	11	2009	MIL	11	.500	27	27	116	0	0	0	140.0	179	99	108	19	77	1	0	5	671	4	7.46	4.95	1.51	1.22	17.3	11.5	1.83	.349	6.94	11.51
10	Dave Mlicki D. Mlicki	6.34	10	2001	TOT	11	.476	29	29	93	0	0	0	159.0	196	112	119	35	74	15	0	3	742	8	5.26	4.19	1.26	1.98	12.5	10.0	1.70	.307	6.74	11.09
11	Adam Eaton A. Eaton	6.29	10	2007	PHI	10	.500	30	30	97	0	0	0	161.2	192	113	117	30	71	11	0	4	734	6	5.40	3.95	1.37	1.67	13.2	9.7	1.63	.309	6.51	10.69
12	Pedro Astacio P. Astacio	6.23	13	1998	COL	14	.481	34	34	170	0	0	0	208.0	243	144	159	38	74	17	0	0	932	2	7.36	3.20	2.30	1.64	18.2	7.9	1.52	.324	6.88	10.51
13	Brian Bohanon B. Bohanon	6.20	12	1999	COL	12	.500	33	33	120	3	1	0	197.1	236	136	146	30	92	14	0	1	903	6	5.47	4.20	1.30	1.37	13.3	10.2	1.66	.318	6.66	10.76
14	Ramon Martinez R. Martinez	6.13	10	2000	BOS	8	.556	27	27	89	0	0	0	127.2	143	87	94	16	67	9	0	3	590	0	6.27	4.72	1.33	1.13	15.1	11.4	1.64	.311	6.63	10.08
15	Lucas Giolito L. Giolito	6.13	10	2018	CWS	13	.435	32	32	125	0	0	0	173.1	166	118	123	27	90	15	0	2	775	13	6.49	4.67	1.39	1.40	16.1	11.6	1.48	.268	6.39	8.62
16	Carlos Silva C. Silva	6.13	11	2006	MIN	15	.423	31	31	66	0	0	0	173.1	240	118	128	38	28	7	0	3	781	1	3.43	1.45	2.36	1.97	8.5	3.6	1.55	.315	6.65	12.46
17	Livan Hernandez L. Hernandez	6.05	13	2008	TOT	11	.542	31	31	67	2	0	0	180.0	257	121	129	25	43	2	0	4	811	3	3.35	2.15	1.56	1.25	8.3	5.3	1.67	.344	6.45	12.85
18	Jason Marquis J. Marquis	6.02	14	2006	STL	16	.467	33	33	96	0	0	0	194.1	221	130	136	35	75	16	0	2	870	2	4.45	3.47	1.28	1.62	11.0	8.6	1.52	.287	6.30	10.23
19	Darren Oliver D. Oliver	6.02	11	2001	TEX	11	.500	28	28	104	1	0	0	154.0	189	103	109	23	65	6	0	0	696	8	6.08	3.80	1.60	1.34	14.9	9.3	1.65	.333	6.37	11.05
20	Jeff Robinson J. Robinson	5.96	10	1990	DET	9	.526	27	27	76	1	1	0	145.0	141	96	101	23	88	6	0	9	654	16	4.72	5.46	0.86	1.43	11.6	13.5	1.58	.256	6.27	8.75
21	Herm Wehmeier H. Wehmeier	5.96	10	1950	CIN	18	.357	32	32	111	12	0	0	207.0	232	137	149	26	131	3	0		962	10	4.83	5.70	0.85	1.13	11.5	13.6	1.75	.298	6.48	10.09
22	Guy Bush G. Bush	5.95	12	1930	CHC	8	.600	25	25	52	11	0	0	160.1	212	106	116	20	53	1	0		724	10	2.92	2.98	0.98	1.12	7.2	7.3	1.65	.321	6.51	11.90
23	Mark Hendrickson M. Hendrickson	5.90	11	2005	TBD	8	.579	31	31	89	1	0	0	178.1	227	117	126	24	49	2	0	1	796	4	4.49	2.47	1.82	1.21	11.2	6.2	1.55	.321	6.36	11.46
24	Ray Benge R. Benge	5.88	11	1929	PHN	11	.500	26	26	62	9	2	0	176.0	219	115	123	22	62	2	0		788	0	3.17	3.17	1.00	1.13	7.9	7.9	1.60	.308	6.29	11.20
25	Kelvim Escobar K. Escobar	5.84	14	1999	TOR	11	.560	30	30	122	1	0	0	168.0	201	109	116	19	78	10	0	2	771	5	6.54	4.18	1.56	1.02	15.8	10.1	1.66	.336	6.21	10.77