most pitching strikeouts before turning 20

Bob Feller has fanned the most career hitters by a pitcher younger than 20, with 466 strikeouts.

Interpreted as:

most pitching strikeouts before turning 20 years old by a player

	NAME	SO	G	W	L	W%	GS	ERA	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	Bob Feller B. Feller	466	79	31	21	.596	63	3.78	34	2	3	488.1	393	205	233	18	361	13	12		2,175	18	8.59	6.65	1.29	0.33	21.4	16.6	1.54	.285	4.29	7.24
2	Dwight Gooden D. Gooden	276	31	17	9	.654	31	2.60	7	3	0	218.0	161	63	72	7	73	2	0	2	879	3	11.39	3.01	3.78	0.29	31.4	8.3	1.07	.296	2.97	6.65
3	Larry Dierker L. Dierker	214	56	16	16	.500	46	3.29	8	2	0	328.1	304	120	141	33	84	4	4	6	1,370	13	5.87	2.30	2.55	0.90	15.6	6.1	1.18	.262	3.86	8.33
4	Gary Nolan G. Nolan	206	33	14	8	.636	32	2.58	8	5	0	226.2	193	65	73	18	62	5	1	7	932	3	8.18	2.46	3.32	0.71	22.1	6.7	1.13	.273	2.90	7.66
5	Mike McCormick M. McCormick	138	69	14	10	.583	35	4.58	9	2	1	259.2	278	132	147	27	101	6	13	8	1,130	10	4.78	3.50	1.37	0.94	12.2	8.9	1.46	.293	5.09	9.64
6	Pete Schneider P. Schneider	137	61	15	23	.395	38	2.59	20	3	3	333.1	309		144	2	133	14	18			1	3.70	3.59	1.03	0.05		9.4	1.33	.273	3.89	8.34
7	Bert Blyleven B. Blyleven	135	27	10	9	.526	25	3.18	5	1	0	164.0	143	58	66	17	47	2	1	6	675	2	7.41	2.58	2.87	0.93	20.0	7.0	1.16	.266	3.62	7.85
8	David Clyde D. Clyde	126	46	7	17	.292	39	4.66	4	0	0	210.1	235	109	127	22	101	8	4	1	938	13	5.39	4.32	1.25	0.94	13.4	10.8	1.60	.313	5.43	10.06
9	Curt Simmons C. Simmons	119	38	9	15	.375	29	4.74	9	0	0	214.2	213	113	131	9	131	2	5		973	6	4.99	5.49	0.91	0.38	12.2	13.5	1.60	.287	5.49	8.93
10	Hal Newhouser H. Newhouser	116	34	12	11	.522	26	4.64	10	0	0	176.1	184	91	104	13	112	2	3		808	5	5.92	5.72	1.04	0.66	14.4	13.9	1.68	.303	5.31	9.39
11	Joe Wood J. Wood	107	30	12	8	.600	21		14	5	0	183.1	135		63	1	57	9	6		727	5	5.25	2.80	1.88	0.05	14.7	7.8	1.05	.242	3.09	6.63
12	Wally Bunker W. Bunker	97	30	19	6	.760	30	2.89	12	1	0	218.0	171	70	78	18	65	3	0	5	875	3	4.00	2.68	1.49	0.74	11.1	7.4	1.08	.221	3.22	7.06
13	Rube Bressler R. Bressler	96	29	10	4	.714	10	1.77	8	1	2	147.2	112	29	37	1	56	4	15		582	3	5.85	3.41	1.71	0.06	16.5	9.6	1.14	.261	2.26	6.83
14	Ray Sadecki R. Sadecki	95	26	9	9	.500	26	3.78	7	1	0	157.1	148	66	76	15	86	1	0	1	689	8	5.43	4.92	1.10	0.86	13.8	12.5	1.49	.270	4.35	8.47
15	Milt Pappas M. Pappas	94	41	13	10	.565	24	4.06	4	0	0	166.1	162	75	82	8	68	2	9	2	708	10	5.09	3.68	1.38	0.43	13.3	9.6	1.38	.287	4.44	8.77
16	Ray Keating R. Keating	88	27	4	13	.235	22	2.38	10	2	0	155.0	153		89	2	59	2	3		667	4	5.11	3.43	1.49	0.12	13.2	8.8	1.37	.293	5.17	8.88
17	Ralph Branca R. Branca	86	37	5	8	.385	16	4.20	7	0	2	154.1	119	72	80	6	111	5	11		690	10	5.02	6.47	0.77	0.35	12.5	16.1	1.49	.234	4.67	6.94
18	Catfish Hunter C. Hunter	83	32	8	8	.500	20	4.26	3	2	0	133.0	124	63	68	21	46	2	2	5	567	2	5.62	3.11	1.80	1.42	14.6	8.1	1.28	.248	4.60	8.39
19	Felix Hernandez F. Hernandez	81	13	4	5	.444	13	2.62	0	0	0	89.1	63	26	27	5	27	3	0	0	349	3	8.16	2.72	3.00	0.50	23.2	7.7	1.01	.249	2.72	6.35
20	Don Gullett D. Gullett	76	44	5	2	.714	2	2.43	0	0	6	77.2	54	21	23	4	44	0	15	6	323	6	8.81	5.10	1.73	0.46	23.5	13.6	1.26	.251	2.67	6.26
21	Jim Palmer J. Palmer	75	27	5	4	.556	6	3.72	0	0	1	92.0	75	38	49	6	56	2	7	1	395	4	7.34	5.48	1.34	0.59	19.0	14.2	1.42	.270	4.79	7.34
22	Sam McDowell S. McDowell	65	25	2	7	.222	13	5.84	0	0	1	86.1	80	56	61	8	73	4	5	1	407	5	6.78	7.61	0.89	0.83	16.0	17.9	1.77	.280	6.36	8.34
23	Harry Harper H. Harper	60	28	2	1	.667	4	3.58	1	0	2	70.1	55	28	41	2	43	5	12		316	6	7.68	5.50	1.40	0.26	19.0	13.6	1.39	.257	5.25	7.04
24	Jack Bentley J. Bentley	58	33	6	7	.462	12	2.20	3	2	5	135.0	115	33	49	3	55	4	15		541	4	3.87	3.67	1.05	0.20	10.7	10.2	1.26	.266	3.27	7.67
25	Jim Brillheart J. Brillheart	56	43	4	7	.364	10	4.05	3	0	1	137.2	148	62	73	4	85	9	22		628	4	3.66	5.56	0.66	0.26	8.9	13.5	1.69	.304	4.77	9.68