most seasons with era lower than 3 by a player

Mariano Rivera played the most seasons with an ERA better than 3.00, with 17 seasons.

	NAME	SEAS	ERA	G	W	L	W%	GS	SO	CG	SHO	SV	IP	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	Mariano Rivera M. Rivera	17	1.96	1,029	74	53	.583	0	1,048	0	0	622	1145.1	859	249	272	56	244	38	891	39	4,507	12	8.24	1.92	4.30	0.44	23.3	5.4	0.96	.257	2.14	44	2.62	59	6.75	236.4
2	Billy Wagner B. Wagner	15	2.19	825	45	36	.556	0	1,168	0	0	416	875.1	573	213	243	76	282	32	684	26	3,471	36	12.01	2.90	4.14	0.78	33.7	8.1	0.98	.260	2.50	52	2.62	61	5.89	162.7
3	Walter Johnson W. Johnson	15	1.79	623	335	214	.610	508	2,877	431	96	26	4648.1	3,661	926	1,315	49	994	159	108		18,079	136	5.57	1.92	2.89	0.09	15.9	5.5	1.00	.258	2.55	62	2.13	72	7.09	409.6
4	Red Ames R. Ames	15	2.52	475	169	153	.525	342	1,605	195	24	32	2930.2	2,607	820	1,183	37	950	63	100		11,945	147	4.93	2.92	1.69	0.11	13.4	8.0	1.21	.277	3.63	89	2.51	87	8.01	121.3
5	Eddie Plank E. Plank	15	2.21	554	289	166	.635	465	2,049	351	67	23	3935.0	3,385	968	1,293	34	943	165	73		15,474	71	4.69	2.16	2.17	0.08	13.2	6.1	1.10	.273	2.96	80	2.36	87	7.74	159
6	John Franco J. Franco	14	2.43	760	69	54	.561	0	669	0	0	338	894.0	807	241	289	48	333	11	590	48	3,751	36	6.73	3.35	2.01	0.48	17.8	8.9	1.28	.282	2.91	63	3.24	83	8.12	68.1
7	Hoyt Wilhelm H. Wilhelm	14	2.10	727	109	86	.559	41	1,184	17	4	172	1604.0	1,157	375	467	91	500	48	456	38	6,370	55	6.64	2.81	2.37	0.51	18.6	7.8	1.03	.234	2.62	59	2.79	77	6.49	148.9
8	Cy Young C. Young	14	2.18	583	338	198	.631	530	2,010	494	60	10	4843.1	4,361	1,174	1,793	70	739	97	49		19,042	90	3.74	1.37	2.72	0.13	10.6	3.9	1.05	.266	3.33	70	2.44	77	8.10	385.6
9	Clayton Kershaw C. Kershaw	13	2.30	352	179	74	.708	351	2,511	25	15	0	2305.0	1,698	588	651	171	555	36	1	24	9,019	80	9.80	2.17	4.52	0.67	27.8	6.2	0.98	.266	2.54	60	2.66	67	6.63	333.6
10	Trevor Hoffman T. Hoffman	13	2.41	753	42	48	.467	0	863	0	0	482	793.0	583	212	235	54	205	7	646	35	3,146	38	9.79	2.33	4.21	0.61	27.4	6.5	0.99	.262	2.67	60	2.62	61	6.62	147.9
11	Ed Walsh E. Walsh	13	1.81	426	195	125	.609	312	1,732	249	57	35	2946.1	2,324	591	864	23	608	51	104		11,331	75	5.29	1.86	2.85	0.07	15.3	5.4	1.00	.258	2.64	69	2.01	79	7.10	166.4
12	Christy Mathewson C. Mathewson	13	1.96	549	337	154	.686	485	2,336	389	72	26	4182.1	3,595	913	1,323	59	777	52	58		16,438	105	5.03	1.67	3.01	0.13	14.2	4.7	1.05	.268	2.85	68	2.17	73	7.74	371.4
13	Joe Nathan J. Nathan	12	2.02	638	45	23	.662	0	764	0	0	327	637.0	419	143	151	43	192	14	498	22	2,500	33	10.79	2.71	3.98	0.61	30.6	7.7	0.96	.253	2.13	47	2.54	60	5.92	122.6
14	Roger Clemens R. Clemens	12	2.52	377	207	90	.697	377	2,679	91	36	0	2754.1	2,165	770	868	158	790	76	0	41	11,067	61	8.75	2.58	3.39	0.52	24.2	7.1	1.07	.273	2.84	58	2.67	63	7.07	482.4
15	Rich Gossage R. Gossage	12	2.14	626	79	57	.581	0	979	0	0	258	1070.2	770	254	293	57	403	17	500	60	4,301	24	8.23	3.39	2.43	0.48	22.8	9.4	1.10	.251	2.46	57	2.73	71	6.47	131.9
16	Rollie Fingers R. Fingers	12	2.52	737	91	87	.511	10	1,070	2	1	297	1294.0	1,067	363	406	80	346	31	592	86	5,209	30	7.44	2.41	3.09	0.56	20.5	6.6	1.09	.268	2.82	74	2.62	73	7.42	139.2
17	Tom Seaver T. Seaver	12	2.46	414	222	118	.653	408	2,642	182	43	1	3170.0	2,489	868	953	223	879	48	5	77	12,660	82	7.50	2.50	3.01	0.63	20.9	6.9	1.06	.256	2.71	71	2.67	78	7.07	271.3
18	Babe Adams B. Adams	12	2.28	356	163	102	.615	289	901	174	39	8	2429.0	2,134	616	790	43	348	33	51		9,513	22	3.34	1.29	2.59	0.16	9.5	3.7	1.02	.255	2.93	75	2.54	82	7.91	155.1
19	Chief Bender C. Bender	12	2.20	369	184	90	.672	265	1,452	207	38	30	2445.0	2,070	599	817	25	575	60	94		9,544	65	5.34	2.12	2.53	0.09	15.2	6.0	1.08	.275	3.01	81	2.15	80	7.62	141.7
20	Mordecai Brown M. Brown	12	1.91	434	223	116	.658	302	1,241	251	53	49	2891.1	2,421	613	911	35	603	54	123		11,251	52	3.86	1.88	2.06	0.11	11.0	5.4	1.05	.256	2.84	66	2.39	83	7.54	152.1
21	Bill Donovan B. Donovan	12	2.45	297	163	102	.615	269	1,309	242	34	7	2407.0	2,056	655	900	21	813	68	28		9,758	50	4.89	3.04	1.61	0.08	13.4	8.3	1.19	.270	3.37	88	2.62	95	7.69	42.6
22	Sam Leever S. Leever	12	2.35	337	173	77	.692	260	726	206	35	10	2281.2	2,096	597	832	22	465	77	64		9,098	38	2.86	1.83	1.56	0.09	8.0	5.1	1.12	.266	3.28	81	2.72	92	8.27	68
23	Pedro Martinez P. Martinez	11	2.31	304	146	51	.741	238	2,128	38	12	2	1768.0	1,283	453	510	117	427	80	22	18	6,988	39	10.83	2.17	4.98	0.60	30.5	6.1	0.97	.275	2.60	51	2.38	55	6.53	395.6
24	Clay Carroll C. Carroll	11	2.48	546	70	46	.603	11	499	0	0	121	982.1	890	271	309	44	288	21	298	71	4,025	26	4.57	2.64	1.73	0.40	12.4	7.2	1.20	.267	2.83	71	3.05	89	8.15	42.8
25	Whitey Ford W. Ford	11	2.53	322	149	64	.700	275	1,276	108	31	8	2039.1	1,734	574	667	142	680	20	27	29	8,321	47	5.63	3.00	1.88	0.63	15.3	8.2	1.18	.257	2.94	69	3.17	86	7.65	121