youngest player to win 20 games with an era of below 3

Dwight Gooden is the youngest with an ERA better than 3.00 and with 20+ pitcher wins in a season. He was 20 years old in 1985.

Interpreted as:

youngest player to win in a regular season 20 or more games with an era of below 3

	NAME	AGE	W	ERA	SEASON	TM	L	W%	G	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	H/9
1	Dwight Gooden D. Gooden	20	20	0.76	1985	NYM	2	.909	25	25	208	14	8	0	212.0	136	18	20	6	51	1	0	4	796	3	8.83	2.17	4.08	0.25	26.1	6.4	0.88	.245	0.85	5.77
2	Bob Feller B. Feller	21	21	1.21	1940	CLE	2	.913	27	22	181	22	4	4	207.2	122	28	31	4	70	2	5		803	4	7.84	3.03	2.59	0.17	22.5	8.7	0.92	.216	1.34	5.29
3	Babe Ruth B. Ruth	21	22	0.87	1916	BSA	3	.880	32	29	133	19	9	1	257.1	153	25	36	0	86	7	2		1,003	3	4.65	3.01	1.55	0.00	13.3	8.6	0.93	.197	1.26	5.35
4	Babe Ruth B. Ruth	22	20	1.13	1917	BSA	6	.769	29	26	103	26	6	2	239.2	152	30	43	0	73	10	3		926	3	3.87	2.74	1.41	0.00	11.1	7.9	0.94	.205	1.61	5.71
5	Bill James B. James	22	21	1.21	1914	BSN	3	.875	33	26	108	23	4	3	246.0	172	33	47	5	74	7	7		940	3	3.95	2.71	1.46	0.18	11.5	7.9	1.00	.224	1.72	6.29
6	Clayton Kershaw C. Kershaw	23	21	0.91	2011	LAD	0	1.000	24	24	185	5	2	0	178.2	117	18	24	6	32	3	0	1	674	5	9.32	1.61	5.78	0.30	27.4	4.7	0.83	.248	1.21	5.89
7	Dick Ellsworth D. Ellsworth	23	20	1.02	1963	CHC	4	.833	27	27	138	18	4	0	228.2	145	26	29	7	56	1	0	7	879	2	5.43	2.20	2.46	0.28	15.7	6.4	0.88	.204	1.14	5.71
8	Tom Seaver T. Seaver	24	20	1.05	1969	NYM	2	.909	23	22	138	16	5	0	188.2	118	22	24	7	47	6	1	4	719	5	6.58	2.24	2.94	0.33	19.2	6.5	0.87	.213	1.14	5.63
9	Denny McLain D. McLain	24	23	1.08	1968	DET	3	.885	28	28	202	22	6	0	242.0	153	29	34	13	43	4	0	0	905	2	7.51	1.60	4.70	0.48	22.3	4.8	0.81	.218	1.26	5.69
10	Hal Newhouser H. Newhouser	24	23	1.01	1945	DET	3	.885	29	27	169	24	8	2	240.2	166	27	34	3	70	0	2		937	6	6.32	2.62	2.41	0.11	18.0	7.5	0.98	.235	1.27	6.21
11	Dizzy Dean D. Dean	24	22	0.74	1934	SLN	1	.957	32	19	131	18	7	6	194.0	135	16	24	2	34	2	12		747	1	6.08	1.58	3.85	0.09	17.5	4.6	0.87	.230	1.11	6.26
12	Blake Snell B. Snell	25	20	1.06	2018	TBR	1	.952	26	26	194	0	0	0	160.2	87	19	22	8	52	1	0	2	604	9	10.87	2.91	3.73	0.45	32.1	8.6	0.87	.226	1.23	4.87
13	Randy Jones R. Jones	25	20	0.85	1975	SDP	3	.870	25	24	77	18	6	0	211.1	143	20	31	5	37	0	1	7	786	1	3.28	1.58	2.08	0.21	9.8	4.7	0.85	.207	1.32	6.09
14	Dave McNally D. McNally	25	20	1.04	1968	BAL	3	.870	23	23	150	17	5	0	198.1	111	23	27	9	34	5	0	0	730	2	6.81	1.54	4.41	0.41	20.5	4.7	0.73	.192	1.23	5.04
15	Hal Newhouser H. Newhouser	25	21	0.73	1946	DET	2	.913	25	23	200	22	6	1	208.2	117	17	25	4	63	0	2		797	3	8.63	2.72	3.17	0.17	25.1	7.9	0.86	.213	1.08	5.05
16	Lefty Gomez L. Gomez	25	20	0.89	1934	NYY	1	.952	22	20	91	20	6	1	181.1	103	18	25	4	49	0	2		687	0	4.52	2.43	1.86	0.20	13.2	7.1	0.84	.182	1.24	5.11
17	Dave Davenport D. Davenport	25	20	1.13	1915	SLF	10	.667	38	34	168	28	10	1	304.0	193	38	48	2	56	1	4			3	4.97	1.66	3.00	0.06		6.0	0.82	.272	1.42	5.71
18	Jeff Tesreau J. Tesreau	25	23	1.03	1914	NYG	3	.885	28	28	139	22	8	0	235.1	140	27	39	2	76	3	0		889	4	5.32	2.91	1.83	0.08	15.6	8.5	0.92	.206	1.49	5.35
19	Claude Hendrix C. Hendrix	25	24	0.91	1914	CHF	6	.800	38	29	145	28	6	4	286.1	171	29	47	2	60	5	9			7	4.56	1.89	2.42	0.06		6.3	0.81	.228	1.48	5.37
20	Walter Johnson W. Johnson	25	34	0.40	1913	WSH	2	.944	40	29	210	23	11	2	289.2	165	13	24	3	36	6	11		1,050	1	6.52	1.12	5.83	0.09	20.0	3.4	0.69	.204	0.75	5.13
21	Tom Seaton T. Seaton	25	21	0.90	1913	PHN	4	.840	29	19	111	16	5	1	200.0	133	20	32	2	67	3	9		782	5	5.00	3.02	1.66	0.09	14.2	8.6	1.00	.219	1.44	5.99
22	Clayton Kershaw C. Kershaw	26	20	0.81	2014	LAD	0	1.000	20	20	183	5	2	0	154.2	94	14	17	4	22	0	0	0	569	6	10.65	1.28	8.32	0.23	32.2	3.9	0.75	.250	0.99	5.47
23	Mel Stottlemyre M. Stottlemyre	26	20	0.93	1968	NYY	2	.909	23	23	95	18	6	0	194.1	142	20	26	9	32	1	0	2	740	1	4.40	1.48	2.97	0.42	12.8	4.3	0.90	.221	1.20	6.58
24	Jesse Barnes J. Barnes	26	20	0.81	1919	NYG	0	1.000	23	21	62	17	4	0	200.0	127	18	29	4	22	2	2		747	2	2.79	0.99	2.82	0.18	8.3	2.9	0.75	.187	1.31	5.72
25	Frank Allen F. Allen	26	21	1.09	1915	PTF	2	.913	26	24	93	21	6	0	214.1	148	26	30	2	65	8	2			3	3.91	2.73	1.43	0.08		8.9	0.99	.260	1.26	6.21