lowest era- by a player in a season with at least 150 ip between 2009 to 2020

Between the 2009 and 2020 seasons, Zack Greinke had the best ERA- with 150.0+ innings pitched in a season, with an ERA- of 44 in 2015.

	NAME	ERA-	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	FIP	FIP-	H/9	PRAA
1	Zack Greinke Z. Greinke	44	222.2	2015	LAD	32	19	3	.864	32	1.66	200	1	0	0	148	41	43	14	40	5	0	1	843	7	8.08	1.62	5.00	0.57	23.7	4.7	0.84	.229	1.74	2.75	73	5.98	26.2
2	Jacob deGrom J. deGrom	44	217.0	2018	NYM	32	10	9	.526	32	1.70	269	1	0	0	152	41	48	10	46	5	0	3	835	2	11.16	1.91	5.85	0.41	32.2	5.5	0.91	.281	1.99	1.98	50	6.30	49
3	Jake Arrieta J. Arrieta	45	229.0	2015	CHC	33	22	6	.786	33	1.77	236	4	3	0	150	45	52	10	48	6	0	2	870	6	9.28	1.89	4.92	0.39	27.1	5.5	0.86	.246	2.04	2.34	60	5.90	39
4	Blake Snell B. Snell	46	180.2	2018	TBR	31	21	5	.808	31	1.89	221	0	0	0	112	38	41	16	64	1	0	2	700	13	11.01	3.19	3.45	0.80	31.6	9.1	0.97	.241	2.04	2.94	72	5.58	23.1
5	Chris Sale C. Sale	48	158.0	2018	BOS	27	12	4	.750	27	2.11	237	0	0	0	102	37	39	11	34	14	0	0	617	4	13.50	1.94	6.97	0.63	38.4	5.5	0.86	.283	2.22	1.97	47	5.81	39.2
6	Zack Greinke Z. Greinke	48	229.1	2009	KCR	33	16	8	.667	33	2.16	242	6	3	0	195	55	64	11	51	4	0	0	915	5	9.50	2.00	4.75	0.43	26.4	5.6	1.07	.303	2.51	2.32	53	7.65	52.5
7	Corey Kluber C. Kluber	50	203.2	2017	CLE	29	18	4	.818	29	2.25	265	5	3	0	141	51	56	21	36	5	0	2	777	4	11.71	1.59	7.36	0.93	34.1	4.6	0.87	.267	2.47	2.49	57	6.23	42.8
8	Trevor Bauer T. Bauer	50	175.1	2018	CLE	28	12	6	.667	27	2.21	221	0	0	1	134	43	51	9	57	9	1	2	717	12	11.34	2.93	3.88	0.46	30.8	7.9	1.09	.297	2.62	2.43	57	6.88	35
9	Clayton Kershaw C. Kershaw	51	198.1	2014	LAD	27	21	3	.875	27	1.77	239	6	2	0	139	39	42	9	31	2	0	0	749	7	10.85	1.41	7.71	0.41	31.9	4.1	0.86	.278	1.91	1.81	50	6.31	40.5
10	Clayton Kershaw C. Kershaw	51	236.0	2013	LAD	33	16	9	.640	33	1.83	232	3	2	0	164	48	55	11	52	3	0	2	908	12	8.85	1.98	4.46	0.42	25.6	5.7	0.92	.251	2.10	2.38	64	6.25	35.4
11	Kyle Hendricks K. Hendricks	51	190.0	2016	CHC	31	16	8	.667	30	2.13	170	2	1	0	142	45	53	15	44	8	0	3	745	5	8.05	2.08	3.86	0.71	22.8	5.9	0.98	.250	2.51	3.20	78	6.73	19.6
12	Clay Buchholz C. Buchholz	54	173.2	2010	BOS	28	17	7	.708	28	2.33	120	1	1	0	142	45	55	9	67	5	0	1	711	7	6.22	3.47	1.79	0.47	16.9	9.4	1.20	.261	2.85	3.61	87	7.36	10
13	Hyun Jin Ryu H. Jin Ryu	54	182.2	2019	LAD	29	14	5	.737	29	2.32	163	1	1	0	160	47	53	17	24	4	0	2	723	0	8.03	1.18	6.79	0.84	22.5	3.3	1.01	.278	2.61	3.09	70	7.88	27.1
14	Chris Carpenter C. Carpenter	55	192.2	2009	STL	28	17	4	.810	28	2.24	144	3	1	0	156	48	49	7	38	7	0	1	750	1	6.73	1.78	3.79	0.33	19.2	5.1	1.01	.269	2.29	2.77	67	7.29	29.3
15	Gerrit Cole G. Cole	55	212.1	2019	HOU	33	20	5	.800	33	2.50	326	0	0	0	142	59	66	29	48	3	0	0	817	4	13.82	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	2.63	58	6.02	45
16	Clayton Kershaw C. Kershaw	56	175.0	2017	LAD	27	18	4	.818	27	2.31	202	1	0	0	136	45	49	23	30	0	0	0	679	4	10.39	1.54	6.73	1.18	29.7	4.4	0.95	.267	2.52	3.06	72	6.99	23
17	Chris Sale C. Sale	56	174.0	2014	CWS	26	12	4	.750	26	2.17	208	2	0	0	129	42	48	13	39	11	0	2	685	3	10.76	2.02	5.33	0.67	30.4	5.7	0.97	.280	2.48	2.57	66	6.67	25.1
18	Clayton Kershaw C. Kershaw	57	232.2	2015	LAD	33	16	7	.696	33	2.13	301	4	3	0	163	55	62	15	42	5	0	1	890	9	11.64	1.62	7.17	0.58	33.8	4.7	0.88	.281	2.40	1.98	52	6.31	47.7
19	Josh Johnson J. Johnson	57	183.2	2010	FLA	28	11	6	.647	28	2.30	186	1	0	0	155	47	51	7	48	5	0	2	744	4	9.11	2.35	3.88	0.34	25.0	6.5	1.11	.297	2.50	2.41	62	7.60	31.2
20	Max Scherzer M. Scherzer	57	200.2	2017	WSH	31	16	6	.727	31	2.51	268	2	0	0	126	56	62	22	55	11	0	2	780	4	12.02	2.47	4.87	0.99	34.4	7.1	0.90	.245	2.78	2.89	66	5.65	33.2
21	Stephen Strasburg S. Strasburg	57	175.1	2017	WSH	28	15	4	.789	28	2.52	204	1	1	0	131	49	55	13	47	7	0	5	701	3	10.47	2.41	4.34	0.67	29.1	6.7	1.02	.274	2.82	2.71	62	6.72	32.4
22	Justin Verlander J. Verlander	57	223.0	2019	HOU	34	21	6	.778	34	2.58	300	2	1	0	137	64	66	36	42	6	0	0	847	4	12.11	1.70	7.14	1.45	35.4	5.0	0.80	.218	2.66	3.26	72	5.53	31.5
23	Justin Verlander J. Verlander	58	251.0	2011	DET	34	24	5	.828	34	2.40	250	4	2	0	174	67	73	24	57	3	0	0	969	7	8.96	2.04	4.39	0.86	25.8	5.9	0.92	.236	2.62	2.99	74	6.24	29.4
24	Felix Hernandez F. Hernandez	58	238.2	2009	SEA	34	19	5	.792	34	2.49	217	2	1	0	200	66	81	15	71	8	0	0	977	17	8.18	2.68	3.06	0.57	22.2	7.3	1.14	.278	3.05	3.08	71	7.54	33.4
25	Felix Hernandez F. Hernandez	58	236.0	2014	SEA	34	15	6	.714	34	2.14	248	0	0	0	170	56	68	16	46	5	0	1	912	18	9.46	1.75	5.39	0.61	27.2	5.0	0.92	.258	2.59	2.56	69	6.48	30.7