mlb best one season era since 1920 with at least 40 ip

Since 1920, Zack Britton has the lowest ERA with 40.0+ innings pitched in a season, with an ERA of 0.54 in 2016.

Interpreted as:

MLB best one season era by a player since 1920 with at least 40 ip

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	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	ERA-	FIP	FIP-	H/9	PRAA
1	Zack Britton Z. Britton	0.54	67.0	2016	BAL	69	2	1	.667	0	74	0	0	47	38	4	7	1	18	0	63	3	254	10	9.94	2.42	4.11	0.13	29.1	7.1	0.84	.230	0.94	13	1.93	44	5.10	17.7
2	Joey Devine J. Devine	0.59	45.2	2008	OAK	42	6	1	.857	0	49	0	0	1	23	3	7	0	15	0	10	2	170	0	9.66	2.96	3.27	0.00	28.8	8.8	0.83	.217	1.38	14	1.96	46	4.53	11.7
3	Fernando Rodney F. Rodney	0.60	74.2	2012	TBR	76	2	2	.500	0	76	0	0	48	43	5	9	2	15	3	65	1	282	4	9.16	1.81	5.07	0.24	27.0	5.3	0.78	.220	1.08	16	2.12	52	5.18	16.2
4	Emmanuel Clase E. Clase	0.61	74.1	2024	CLE	74	4	2	.667	0	66	0	0	47	39	5	10	2	10	2	66	1	270	2	7.99	1.21	6.60	0.24	24.4	3.7	0.66	.195	1.21	15	2.22	55	4.72	15.2
5	Dennis Eckersley D. Eckersley	0.61	73.1	1990	OAK	63	4	2	.667	0	73	0	0	48	41	5	9	2	4	0	61	1	262	0	8.96	0.49	18.25	0.25	27.9	1.5	0.61	.213	1.10	17	1.33	35	5.03	20.6
6	Casey Sadler C. Sadler	0.67	40.1	2021	SEA	42	0	1	.000	0	37	0	0	0	19	3	4	1	10	1	2	0	145	2	8.26	2.23	3.70	0.22	25.5	6.9	0.72	.188	0.89	16	2.47	59	4.24	7.7
7	Rob Murphy R. Murphy	0.72	50.1	1986	CIN	34	6	0	1.000	0	36	0	0	1	26	4	4	0	21	0	12	2	195	5	6.44	3.75	1.71	0.00	18.5	10.8	0.93	.188	0.72	19	2.58	67	4.65	7
8	Barry Latman B. Latman	0.76	47.2	1958	CWS	13	3	0	1.000	3	28	1	1	0	27	4	7	1	17	1	3	0	188	1	5.29	3.21	1.65	0.19	14.9	9.0	0.92	.184	1.32	20	2.71	73	5.10	5.5
9	Rich Gossage R. Gossage	0.77	46.2	1981	NYY	32	3	2	.600	0	48	0	0	20	22	4	6	2	14	1	30	1	173	1	9.26	2.70	3.43	0.39	27.7	8.1	0.77	.185	1.16	22	2.06	57	4.24	8.3
10	Blake Treinen B. Treinen	0.78	80.1	2018	OAK	68	9	2	.818	0	100	0	0	38	46	7	12	2	21	1	58	3	315	6	11.20	2.35	4.76	0.22	31.7	6.7	0.83	.230	1.34	19	1.81	44	5.15	21
11	Cisco Carlos C. Carlos	0.86	41.2	1967	CWS	8	2	0	1.000	7	27	1	1	0	23	4	5	0	9	1	1	0	158	1	5.83	1.94	3.00	0.00	17.1	5.7	0.77	.190	1.08	28	1.96	60	4.97	6.1
12	Bill Henry B. Henry	0.87	52.0	1964	CIN	37	2	2	.500	0	28	0	0	6	31	5	9	2	12	3	20	4	202	1	4.85	2.08	2.33	0.35	13.9	5.9	0.83	.185	1.56	24	2.89	82	5.37	3.6
13	Josh Hader J. Hader	0.87	41.1	2026	HOU	42	4	1	.800	0	54	0	0	25	16	4	4	1	11	0	34	0	151	0	11.76	2.40	4.91	0.22	35.8	7.3	0.65	.176	0.87	21	1.60	39	3.48	11.7
14	Dennys Reyes D. Reyes	0.89	50.2	2006	MIN	66	5	0	1.000	0	49	0	0	0	35	5	8	3	15	0	8	2	194	4	8.70	2.66	3.27	0.53	25.3	7.7	0.99	.252	1.42	20	2.86	65	6.22	8.7
15	Jonathan Papelbon J. Papelbon	0.92	68.1	2006	BOS	59	4	2	.667	0	75	0	0	35	40	7	8	3	13	1	49	2	257	2	9.88	1.71	5.77	0.40	29.2	5.1	0.78	.224	1.05	20	2.13	48	5.27	17.7
16	Wade Davis W. Davis	0.94	67.1	2015	KCR	69	8	1	.889	0	78	0	0	17	33	7	8	3	20	0	24	1	251	1	10.43	2.67	3.90	0.40	31.1	8.0	0.79	.200	1.07	23	2.28	58	4.41	12.7
17	Chris Hammond C. Hammond	0.95	76.0	2002	ATL	63	7	2	.778	0	63	0	0	0	53	8	15	1	31	1	6	9	311	1	7.46	3.67	2.03	0.12	20.3	10.0	1.11	.242	1.78	23	2.73	65	6.28	12.3
18	Aaron Loup A. Loup	0.95	56.2	2021	NYM	65	6	0	1.000	2	57	0	0	0	37	6	9	1	16	4	6	0	218	0	9.05	2.54	3.56	0.16	26.1	7.3	0.94	.257	1.43	24	2.44	58	5.88	11.2
19	Eric O'Flaherty E. O'Flaherty	0.98	73.2	2011	ATL	78	2	4	.333	0	67	0	0	0	59	8	9	2	21	3	5	8	301	1	8.19	2.57	3.19	0.24	22.3	7.0	1.09	.274	1.10	26	2.53	67	7.21	10.3
20	Wade Davis W. Davis	1.00	72.0	2014	KCR	71	9	2	.818	0	109	0	0	3	38	8	8	0	23	3	11	0	279	1	13.63	2.88	4.74	0.00	39.1	8.2	0.85	.264	1.00	25	1.18	32	4.75	20.7
21	Craig Kimbrel C. Kimbrel	1.01	62.2	2012	ATL	63	3	1	.750	0	116	0	0	42	27	7	7	3	14	2	56	0	231	5	16.66	2.01	8.29	0.43	50.2	6.1	0.65	.250	1.01	26	0.77	20	3.88	21.6
22	Dale Murray D. Murray	1.03	69.2	1974	MON	32	1	1	.500	0	31	0	0	10	46	8	12	1	23	0	23	2	271	1	4.00	2.97	1.35	0.13	11.4	8.5	0.99	.208	1.55	27	2.86	78	5.94	6.1
23	Rollie Fingers R. Fingers	1.04	78.0	1981	MIL	47	6	3	.667	0	61	0	0	28	55	9	9	3	13	1	41	5	297	1	7.04	1.50	4.69	0.35	20.5	4.4	0.87	.237	1.04	30	2.07	58	6.35	13.4
24	Bob Veale B. Veale	1.04	77.2	1963	PIT	34	5	2	.714	7	68	3	2	3	59	9	15	1	40	1	10	2	321	5	7.88	4.64	1.70	0.12	21.2	12.5	1.27	.275	1.74	32	2.48	77	6.84	6.6
25	Chris Martin C. Martin	1.05	51.1	2023	BOS	55	4	1	.800	0	46	0	0	3	45	6	6	2	8	0	12	3	199	1	8.06	1.40	5.75	0.35	23.1	4.0	1.03	.301	1.05	23	2.43	56	7.89	10.7

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Mon 9/14	BAL	@	NYM	7:10 PM
Tue 9/15	BAL	@	NYM	7:10 PM
Wed 9/16	BAL	@	NYM	7:10 PM
Fri 9/18	MIL	@	BAL	7:05 PM
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Since 1920, Zack Britton has the lowest ERA with 40.0+ innings pitched in a season, with an ERA of 0.54 in 2016.

Interpreted as:

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