player lowest era by day of week, min 250 ip, all-time, since 1920

Since 1920, Jon Matlack has the lowest ERA when pitching at least 250 innings, with an ERA of 1.96 on Saturdays.

	NAME	ERA	IP	WEEKDAY	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	H/9
1	Jon Matlack J. Matlack	1.96	363.1	Saturday	51	25	9	.735	46	252	23	7	2	288	79	95	15	97	3	4	8	1,431	9	6.24	2.40	2.60	0.37	17.6	6.8	1.06	.257	2.35	7.13
2	Hoyt Wilhelm H. Wilhelm	1.98	514.1	Sunday	232	28	21	.571	12	363	6	2	54	387	113	140	24	143	9	139	15	2,042	14	6.35	2.50	2.54	0.42	17.8	7.0	1.03	.242	2.45	6.77
3	Rich Gossage R. Gossage	2.03	284.1	Tuesday	155	22	11	.667	4	226	4	0	55	212	64	71	13	101	7	110	12	1,140	8	7.15	3.20	2.24	0.41	19.8	8.9	1.10	.251	2.25	6.71
4	Jacob deGrom J. deGrom	2.06	253.0	Wednesday	41	15	9	.625	41	311	0	0	0	173	58	59	21	63	4	0	4	980	7	11.06	2.24	4.94	0.75	31.7	6.4	0.93	.262	2.10	6.15
5	Whitey Ford W. Ford	2.21	611.0	Friday	91	46	18	.719	86	393	35	10	1	490	150	184	41	222	3	4		2,482	11	5.79	3.27	1.77	0.60	15.8	8.9	1.17	.246	2.71	7.22
6	Clayton Kershaw C. Kershaw	2.28	312.1	Thursday	50	26	10	.722	50	342	4	2	0	247	79	84	19	93	3	0	5	1,239	14	9.85	2.68	3.68	0.55	27.6	7.5	1.09	.292	2.42	7.12
7	Juan Marichal J. Marichal	2.30	650.0	Tuesday	81	49	28	.636	79	422	51	12	0	519	166	214	51	132	10	2	19	2,590	10	5.84	1.83	3.20	0.71	16.3	5.1	1.00	.237	2.96	7.19
8	Jacob deGrom J. deGrom	2.32	283.0	Friday	45	19	11	.633	45	339	1	1	0	197	73	77	29	55	8	0	2	1,086	5	10.78	1.75	6.16	0.92	31.2	5.1	0.89	.256	2.45	6.27
9	Don Drysdale D. Drysdale	2.35	587.0	Wednesday	82	37	24	.607	79	398	31	9	1	493	153	185	40	147	27	1	19	2,371	15	6.10	2.25	2.71	0.61	16.8	6.2	1.09	.258	2.84	7.56
10	Clayton Kershaw C. Kershaw	2.37	462.1	Sunday	74	36	9	.800	72	513	6	3	0	345	122	133	37	120	13	0	9	1,821	17	9.99	2.34	4.28	0.72	28.2	6.6	1.01	.271	2.59	6.72
11	Wilbur Wood W. Wood	2.39	305.1	Thursday	72	20	14	.588	32	163	12	5	6	286	81	94	21	73	2	20	8	1,243	8	4.80	2.15	2.23	0.62	13.1	5.9	1.18	.269	2.77	8.43
12	Clayton Kershaw C. Kershaw	2.41	374.0	Wednesday	60	28	11	.718	59	423	3	2	0	273	100	112	34	93	4	0	2	1,472	14	10.18	2.24	4.55	0.82	28.7	6.3	0.98	.260	2.70	6.57
13	Max Lanier M. Lanier	2.41	291.2	Tuesday	53	19	12	.613	37	139	17	7	2	235	78	90	7	118	2	7		1,191	1	4.29	3.64	1.18	0.22	11.7	9.9	1.21	.246	2.78	7.25
14	Clayton Kershaw C. Kershaw	2.41	279.2	Monday	41	25	6	.806	41	278	6	3	0	202	75	80	25	46	1	0	0	1,069	12	8.95	1.48	6.04	0.80	26.0	4.3	0.89	.246	2.57	6.50
15	Dave McNally D. McNally	2.43	293.0	Thursday	41	24	8	.750	40	171	17	6	0	213	79	89	22	87	8	0	6	1,159	9	5.25	2.67	1.97	0.68	14.8	7.5	1.02	.219	2.73	6.54
16	Andy Messersmith A. Messersmith	2.43	419.0	Saturday	61	27	15	.643	53	288	19	7	0	300	113	127	30	151	6	4	4	1,680	9	6.19	3.24	1.91	0.64	17.1	9.0	1.08	.224	2.73	6.44
17	Mel Stottlemyre M. Stottlemyre	2.43	455.1	Saturday	60	34	15	.694	59	199	30	12	1	391	123	144	27	143	5	1	12	1,848	7	3.93	2.83	1.39	0.53	10.8	7.7	1.17	.247	2.85	7.73
18	Jacob deGrom J. deGrom	2.43	281.0	Saturday	44	16	12	.571	44	357	1	0	0	216	76	84	25	61	5	0	2	1,106	7	11.43	1.95	5.85	0.80	32.3	5.5	0.99	.290	2.69	6.92
19	Jesse Barnes J. Barnes	2.45	316.1	Saturday	51	21	13	.618	36	63	23	5	5	315		103	12	66	1	12		1,277	0	1.79	1.88	0.95	0.34	4.9	5.2	1.20	.267	2.93	8.96
20	Mel Stottlemyre M. Stottlemyre	2.46	399.0	Wednesday	52	24	22	.522	52	212	26	7	0	339	109	129	22	100	12	0	10	1,608	4	4.78	2.26	2.12	0.50	13.2	6.2	1.10	.251	2.91	7.65
21	Sandy Koufax S. Koufax	2.46	285.0	Thursday	48	22	7	.759	40	317	18	7	1	199	78	92	26	85	3	7	2	1,133	8	10.01	2.68	3.73	0.82	28.0	7.5	1.00	.246	2.91	6.28
22	Jim Bunning J. Bunning	2.46	606.1	Tuesday	88	35	29	.547	78	461	27	8	1	500	166	197	48	145	24	6	13	2,457	4	6.84	2.15	3.18	0.71	18.8	5.9	1.06	.254	2.92	7.42
23	Lefty Grove L. Grove	2.47	466.2	Thursday	71	34	19	.642	54	263	39	3	8	420	128	150	16	123	5	15		1,904	3	5.07	2.37	2.14	0.31	13.8	6.5	1.16	.270	2.89	8.10
24	Sandy Koufax S. Koufax	2.47	415.0	Saturday	67	28	13	.683	53	408	25	10	1	296	114	132	35	139	1	4	13	1,662	9	8.85	3.01	2.94	0.76	24.5	8.4	1.05	.242	2.86	6.42
25	Dean Chance D. Chance	2.48	345.1	Friday	61	20	21	.488	47	237	13	5	1	296	95	128	19	129	14	5	10	1,430	18	6.18	3.36	1.84	0.50	16.6	9.0	1.23	.269	3.34	7.71