lowest era- by a player with at least 750 ip between 1966 to 1968

Between the 1966 and 1968 seasons, Bob Gibson had the best ERA- when pitching at least 750 innings, with an ERA- of 61.

	NAME	ERA-	IP	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	Bob Gibson B. Gibson	61	760.1	93	56	28	.667	93	2.04	640	58	20	0	559	172	201	41	180	15	0	14	2,983	19	7.58	2.13	3.56	0.49	21.5	6.0	0.97	.246	2.38	2.27	72	6.62	73.6
2	Juan Marichal J. Marichal	75	835.1	101	65	25	.722	100	2.43	606	73	11	0	718	226	273	73	124	12	1	21	3,326	11	6.53	1.34	4.89	0.79	18.2	3.7	1.01	.257	2.94	2.66	84	7.74	45.8
3	Jim Bunning J. Bunning	81	776.1	110	40	43	.482	107	2.67	600	35	12	1	669	230	260	58	176	40	2	34	3,154	12	6.96	2.04	3.41	0.67	19.0	5.6	1.09	.268	3.01	2.77	87	7.76	39.3
4	Gaylord Perry G. Perry	81	839.1	114	52	40	.565	110	2.67	604	50	9	2	713	249	283	45	183	13	3	32	3,372	26	6.48	1.96	3.30	0.48	17.9	5.4	1.07	.264	3.03	2.45	78	7.65	66.2
5	Fergie Jenkins F. Jenkins	83	781.2	139	46	36	.561	90	2.86	646	42	7	5	635	248	274	80	200	10	22	27	3,139	9	7.44	2.30	3.23	0.92	20.6	6.4	1.07	.252	3.15	2.97	89	7.31	30.1
6	Dean Chance D. Chance	85	835.1	125	48	47	.505	115	2.77	634	44	13	3	674	257	318	50	245	24	7	24	3,389	29	6.83	2.64	2.59	0.54	18.7	7.2	1.10	.256	3.43	2.72	80	7.26	59.3
7	Jim Kaat J. Kaat	87	776.0	113	55	38	.591	108	2.90	546	41	7	0	732	250	302	66	137	15	1	6	3,181	26	6.33	1.59	3.99	0.77	17.2	4.3	1.12	.276	3.50	2.79	80	8.49	60.5
8	Don Drysdale D. Drysdale	91	794.2	109	40	44	.476	109	2.80	528	32	14	0	749	247	283	51	161	37	0	37	3,240	16	5.98	1.82	3.28	0.58	16.3	5.0	1.15	.283	3.21	2.75	94	8.48	14.4
9	Larry Jackson L. Jackson	93	760.1	112	41	47	.466	106	3.07	378	35	11	0	728	259	303	51	176	15	2	31	3,132	8	4.47	2.08	2.15	0.60	12.1	5.6	1.19	.270	3.59	3.13	98	8.62	4.1
10	Earl Wilson E. Wilson	93	752.1	111	53	34	.609	108	3.07	552	35	6	0	622	257	274	84	231	9	2	14	3,051	24	6.60	2.76	2.39	1.00	18.1	7.6	1.13	.247	3.28	3.44	100	7.44	1.9
11	Denny McLain D. McLain	94	835.1	116	68	36	.654	116	3.09	633	52	13	0	655	287	316	108	240	12	0	8	3,344	13	6.82	2.59	2.64	1.16	18.9	7.2	1.07	.233	3.40	3.55	104	7.06	-14.7
12	Mel Stottlemyre M. Stottlemyre	98	784.2	109	48	47	.505	107	3.05	437	38	13	1	717	266	298	59	235	6	2	25	3,228	16	5.01	2.70	1.86	0.68	13.5	7.3	1.21	.264	3.42	3.27	102	8.22	-5.5
13	Claude Osteen C. Osteen	101	782.2	117	46	49	.484	113	3.06	408	27	11	0	803	266	317	39	171	9	2	33	3,245	13	4.69	1.97	2.39	0.45	12.6	5.3	1.24	.292	3.65	2.79	96	9.23	9.2