lowest era- by a player with at least 400 ip between 1971 to 1973

Between the 1971 and 1973 seasons, Tom Seaver had the best ERA- when pitching at least 400 innings, with an ERA- of 65.

	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	Tom Seaver T. Seaver	65	838.1	107	60	32	.652	106	2.23	789	52	10	0	644	208	227	64	202	13	1	9	3,310	18	8.47	2.17	3.91	0.69	23.8	6.1	1.01	.259	2.44	2.35	69	6.91	97.5
2	Don Sutton D. Sutton	70	794.1	104	54	31	.635	103	2.35	601	44	16	1	613	207	241	41	174	14	1	10	3,126	24	6.81	1.97	3.45	0.46	19.2	5.6	0.99	.249	2.73	2.33	71	6.95	85.2
3	Jim Palmer J. Palmer	70	852.2	111	63	28	.692	110	2.39	526	57	12	1	675	226	253	56	289	8	1	12	3,449	19	5.55	3.05	1.82	0.59	15.3	8.4	1.13	.241	2.67	3.13	90	7.12	31.1
4	Wilbur Wood W. Wood	74	1070.0	142	70	50	.583	139	2.64	602	63	19	1	978	314	380	74	227	21	3	10	4,337	24	5.06	1.91	2.65	0.62	13.9	5.2	1.13	.265	3.20	2.93	82	8.23	79.9
5	Bill Lee B. Lee	75	471.0	132	33	17	.660	36	2.83	237	18	1	8	452	148	166	32	154	7	30	17	1,970	8	4.53	2.94	1.54	0.61	12.0	7.8	1.29	.273	3.17	3.41	89	8.64	23.6
6	Gaylord Perry G. Perry	75	966.2	119	59	47	.557	118	2.68	630	72	14	1	823	288	338	71	264	22	1	29	3,904	36	5.87	2.46	2.39	0.66	16.1	6.8	1.12	.258	3.15	3.01	84	7.66	57.2
7	Bert Blyleven B. Blyleven	76	890.2	117	53	49	.520	116	2.68	710	53	17	0	810	265	297	59	195	24	1	12	3,605	19	7.17	1.97	3.64	0.60	19.7	5.4	1.13	.287	3.00	2.47	69	8.18	111.8
8	Vida Blue V. Blue	77	726.2	101	50	27	.649	99	2.55	570	42	16	0	540	206	236	56	241	9	0	8	2,896	27	7.06	2.98	2.37	0.69	19.7	8.3	1.07	.240	2.92	2.94	87	6.69	33.8
9	Bob Gibson B. Gibson	78	718.2	90	47	34	.580	90	2.74	535	56	10	0	600	219	250	40	221	13	0	28	2,935	26	6.70	2.77	2.42	0.50	18.2	7.5	1.14	.263	3.13	2.67	77	7.51	62.3
10	Mike Marshall M. Marshall	79	406.1	223	33	27	.550	0	2.86	304	0	0	72	345	129	144	22	172	10	181	32	1,683	25	6.73	3.81	1.77	0.49	18.1	10.2	1.27	.275	3.19	3.03	84	7.64	25.3
11	Don Wilson D. Wilson	80	735.2	105	42	36	.538	99	2.76	501	41	9	2	578	226	253	52	237	16	4	11	2,982	23	6.13	2.90	2.11	0.64	16.8	7.9	1.11	.242	3.10	3.05	90	7.07	25
12	Gary Nolan G. Nolan	81	431.0	62	27	21	.563	62	2.69	239	15	2	0	361	129	143	26	96	3	0	17	1,724	6	4.99	2.00	2.49	0.54	13.9	5.6	1.06	.246	2.99	2.79	86	7.54	20.8
13	Luis Tiant L. Tiant	81	523.1	99	36	26	.581	64	3.06	388	36	6	3	418	178	192	47	175	8	16	9	2,130	6	6.67	3.01	2.22	0.81	18.2	8.2	1.13	.245	3.30	3.22	85	7.19	31.8
14	Jon Matlack J. Matlack	82	523.0	75	29	29	.500	72	2.86	398	22	7	0	456	166	190	32	185	4	2	28	2,167	16	6.85	3.18	2.15	0.55	18.4	8.5	1.23	.274	3.27	2.83	83	7.85	33.4
15	Phil Niekro P. Niekro	83	796.0	122	44	36	.550	102	3.11	468	44	6	6	716	275	327	70	212	13	12	13	3,274	29	5.29	2.40	2.21	0.79	14.3	6.5	1.17	.257	3.70	3.28	89	8.10	35.7
16	Burt Hooton B. Hooton	83	479.1	78	27	31	.466	68	3.21	288	20	6	0	457	171	190	27	164	5	2	14	2,011	18	5.41	3.08	1.76	0.51	14.3	8.2	1.30	.282	3.57	3.07	81	8.58	37.2
17	Catfish Hunter C. Hunter	84	825.1	111	63	23	.733	110	2.75	496	43	12	0	647	252	282	87	219	8	1	14	3,297	7	5.41	2.39	2.26	0.95	15.0	6.6	1.05	.225	3.08	3.46	104	7.06	-17.4
18	Fergie Jenkins F. Jenkins	85	885.1	113	58	41	.586	113	3.25	617	60	10	0	824	320	358	96	156	16	0	23	3,594	7	6.27	1.59	3.96	0.98	17.2	4.3	1.11	.269	3.64	3.06	82	8.38	65.4
19	Steve Carlton S. Carlton	85	913.0	118	60	39	.606	117	3.07	705	66	15	0	825	311	350	69	298	9	0	31	3,784	27	6.95	2.94	2.37	0.68	18.6	7.9	1.23	.280	3.45	2.91	82	8.13	61.6
20	Bill Hands B. Hands	86	573.1	107	30	36	.455	78	3.30	302	23	5	2	554	210	254	53	138	6	21	15	2,388	11	4.74	2.17	2.19	0.83	12.6	5.8	1.21	.265	3.99	3.36	90	8.70	24.7
21	Mickey Lolich M. Lolich	86	1012.0	128	63	43	.594	128	3.06	772	69	11	0	933	344	376	100	245	23	0	14	4,145	25	6.87	2.18	3.15	0.89	18.6	5.9	1.16	.277	3.34	3.02	84	8.30	65.9
22	Dock Ellis D. Ellis	86	582.0	84	46	30	.605	84	2.95	355	18	4	0	539	191	239	28	151	11	0	16	2,409	9	5.49	2.34	2.35	0.43	14.7	6.3	1.19	.274	3.70	2.71	81	8.34	42.2
23	Nelson Briles N. Briles	87	550.1	98	36	28	.563	74	2.98	290	20	5	1	517	182	221	45	129	5	9	23	2,261	4	4.74	2.11	2.25	0.74	12.8	5.7	1.17	.263	3.61	3.21	95	8.45	9.3
24	Nolan Ryan N. Ryan	87	762.0	110	50	46	.521	104	2.87	849	49	13	1	529	243	271	40	435	32	3	10	3,214	39	10.03	5.14	1.95	0.47	26.4	13.5	1.27	.263	3.20	2.77	84	6.25	46.9
25	Rick Wise R. Wise	87	800.1	108	49	42	.538	106	3.11	441	51	11	0	770	277	321	54	200	8	1	30	3,295	16	4.96	2.25	2.21	0.61	13.4	6.1	1.21	.276	3.61	3.02	86	8.66	42.8