lowest era- by a player with at least 400 ip between 1968 to 1970

Between the 1968 and 1970 seasons, Bob Gibson had the lowest ERA- when pitching at least 400 innings, with an ERA- of 58.

	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	58	912.2	103	65	29	.691	103	2.13	811	79	20	0	711	216	244	36	245	21	0	22	3,644	13	8.00	2.42	3.31	0.36	22.3	6.7	1.05	.267	2.41	2.12	63	7.01	126.8
2	Tom Seaver T. Seaver	69	842.0	109	59	31	.656	106	2.42	696	51	12	1	656	226	251	60	213	19	3	22	3,350	22	7.44	2.28	3.27	0.64	20.8	6.4	1.03	.252	2.68	2.61	79	7.01	68.7
3	Jerry Koosman J. Koosman	71	716.2	97	48	28	.632	95	2.46	476	38	14	0	597	196	225	52	208	14	0	32	2,899	22	5.98	2.61	2.29	0.65	16.4	7.2	1.12	.254	2.83	3.04	92	7.50	20.2
4	Jim Palmer J. Palmer	71	486.0	65	36	14	.720	62	2.57	322	28	11	0	394	139	146	32	164	2	1	5	1,979	17	5.96	3.04	1.96	0.59	16.3	8.3	1.15	.248	2.70	3.14	82	7.30	36.5
5	Wilbur Wood W. Wood	71	400.1	241	32	36	.471	2	2.50	232	0	0	52	358	111	137	28	109	8	158	34	1,644	12	5.22	2.45	2.13	0.63	14.1	6.6	1.17	.260	3.08	3.12	86	8.05	23.2
6	Sam McDowell S. McDowell	72	859.0	116	53	40	.570	114	2.58	866	48	8	1	639	246	297	51	343	24	3	28	3,521	38	9.07	3.59	2.52	0.53	24.6	9.7	1.14	.263	3.11	2.55	68	6.69	111.6
7	Denny McLain D. McLain	76	752.1	97	58	20	.744	96	2.64	513	52	15	0	629	221	242	75	158	13	0	9	2,994	8	6.14	1.89	3.25	0.90	17.1	5.3	1.05	.248	2.89	3.08	86	7.52	40.8
8	Jim Perry J. Perry	77	679.1	118	52	24	.684	94	2.80	390	28	9	1	615	211	236	46	149	23	8	22	2,776	8	5.17	1.97	2.62	0.61	14.0	5.4	1.12	.262	3.13	3.02	80	8.15	58
9	Gaylord Perry G. Perry	78	944.2	120	58	42	.580	118	2.72	620	68	11	1	822	286	346	60	234	23	2	34	3,840	29	5.91	2.23	2.65	0.57	16.1	6.1	1.12	.262	3.30	2.84	85	7.83	53.3
10	Luis Tiant L. Tiant	78	600.2	90	37	32	.536	86	2.76	470	30	11	0	465	184	212	65	243	14	1	15	2,468	5	7.04	3.64	1.93	0.97	19.0	9.8	1.18	.239	3.18	3.60	97	6.97	2.2
11	Andy Messersmith A. Messersmith	78	526.0	105	31	23	.574	64	2.65	447	18	4	10	357	155	177	41	213	12	22	17	2,124	21	7.65	3.64	2.10	0.70	21.0	10.0	1.08	.224	3.03	3.13	87	6.11	25.2
12	Bill Hands B. Hands	78	823.2	118	54	39	.581	113	3.00	499	41	9	1	767	275	314	67	185	16	1	16	3,360	18	5.45	2.02	2.70	0.73	14.9	5.5	1.16	.270	3.43	3.09	85	8.38	53.6
13	Fergie Jenkins F. Jenkins	80	932.1	123	63	46	.578	121	3.08	807	67	13	1	804	319	346	83	196	18	2	28	3,771	22	7.79	1.89	4.12	0.80	21.4	5.2	1.07	.270	3.34	2.62	72	7.76	104.2
14	Juan Marichal J. Marichal	80	868.0	109	59	30	.663	107	2.79	546	71	14	0	808	269	324	64	148	13	1	19	3,518	17	5.66	1.53	3.69	0.66	15.5	4.2	1.10	.271	3.36	2.75	84	8.38	50.8
15	Tommy John T. John	81	679.0	95	31	33	.484	95	2.93	383	21	6	0	618	221	253	45	240	22	0	30	2,822	34	5.08	3.18	1.60	0.60	13.6	8.5	1.26	.269	3.35	3.41	91	8.19	26.4
16	Dave McNally D. McNally	82	837.2	116	66	26	.717	115	2.80	553	45	10	0	684	261	284	74	217	22	0	10	3,349	17	5.94	2.33	2.55	0.80	16.5	6.5	1.08	.246	3.05	3.19	90	7.35	33.9
17	Fritz Peterson F. Peterson	82	744.2	112	49	38	.563	101	2.70	392	30	8	0	662	223	269	52	112	10	3	26	2,950	6	4.74	1.35	3.50	0.63	13.3	3.8	1.04	.256	3.25	2.86	82	8.00	51.3
18	Gary Nolan G. Nolan	83	509.1	76	35	19	.648	74	3.07	375	10	5	0	433	174	195	46	185	4	0	13	2,107	14	6.63	3.27	2.03	0.81	17.8	8.8	1.21	.259	3.45	3.35	96	7.65	8
19	Stan Williams S. Williams	84	486.0	173	29	26	.527	39	2.91	362	9	2	36	403	157	184	47	150	27	79	19	2,005	7	6.70	2.78	2.41	0.87	18.1	7.5	1.14	.251	3.41	3.35	91	7.46	16.5
20	Mike Cuellar M. Cuellar	84	759.0	107	55	30	.647	103	2.89	505	50	11	1	638	244	280	60	193	3	3	19	3,051	11	5.99	2.29	2.62	0.71	16.6	6.3	1.09	.252	3.32	3.00	84	7.57	47.5
21	Steve Carlton S. Carlton	84	722.0	99	40	41	.494	97	2.98	565	35	9	0	638	239	276	51	263	9	1	26	3,008	27	7.04	3.28	2.15	0.64	18.8	8.7	1.25	.277	3.44	2.99	88	7.95	31.7
22	Phil Niekro P. Niekro	85	770.2	111	49	43	.533	101	3.08	501	46	12	3	685	264	300	77	170	16	8	12	3,142	37	5.85	1.99	2.95	0.90	15.9	5.4	1.11	.256	3.50	3.23	93	8.00	18.7
23	Mel Stottlemyre M. Stottlemyre	85	852.2	112	56	39	.589	112	2.79	379	57	9	0	772	264	301	63	246	15	0	26	3,503	19	4.00	2.60	1.54	0.66	10.8	7.0	1.19	.253	3.18	3.50	102	8.15	-7.2
24	Bill Singer B. Singer	85	678.1	94	41	34	.547	92	2.67	567	33	11	1	550	201	232	46	184	17	1	17	2,752	22	7.52	2.44	3.08	0.61	20.6	6.7	1.08	.260	3.08	2.58	85	7.30	34.7
25	Bob Veale B. Veale	86	673.0	104	36	43	.456	99	3.01	562	27	6	0	608	225	259	36	279	8	2	20	2,859	23	7.52	3.73	2.01	0.48	19.7	9.8	1.32	.290	3.46	2.80	86	8.13	35.8