most strikeouts by a pitcher in first 12 seasons

Tom Seaver struck out the most hitters by a pitcher in his first 12 seasons, with 2,756 strikeouts.

	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	ERA-	FIP	FIP-	H/9	PRAA
1	Tom Seaver T. Seaver	2,756	423	219	127	.633	417	2.51	188	47	1	3239.2	2,568	905	991	232	888	48	5	79	12,945	81	7.66	2.47	3.10	0.64	21.3	6.9	1.07	.259	2.75	72	2.64	77	7.13	290.2
2	Randy Johnson R. Johnson	2,693	331	160	88	.645	322	3.26	68	25	2	2250.0	1,730	814	913	199	1,013	101	4	15	9,381	75	10.77	4.05	2.66	0.80	28.7	10.8	1.22	.285	3.65	76	3.23	76	6.92	279.1
3	Max Scherzer M. Scherzer	2,692	365	170	89	.656	356	3.20	10	5	0	2290.0	1,883	813	876	254	618	85	2	19	9,278	65	10.58	2.43	4.36	1.00	29.0	6.7	1.09	.289	3.44	77	3.12	76	7.40	254.2
4	Nolan Ryan N. Ryan	2,686	362	151	145	.510	328	3.12	152	37	3	2468.2	1,720	857	973	134	1,532	74	13	39	10,467	116	9.79	5.59	1.75	0.49	25.7	14.6	1.32	.263	3.55	90	3.04	87	6.27	127
5	Mickey Lolich M. Lolich	2,540	476	195	157	.554	427	3.43	171	38	9	3121.0	2,833	1,188	1,296	310	950	91	25	55	12,964	102	7.32	2.74	2.67	0.89	19.6	7.3	1.21	.278	3.74	96	3.18	87	8.17	166.4
6	Walter Johnson W. Johnson	2,467	505	277	177	.610	410	1.66	361	79	20	3800.1	2,910	701	1,030	31	767	135	89		14,605	125	5.84	1.82	3.22	0.07	16.9	5.3	0.97	.257	2.44	61	1.93	70	6.89	352.2
7	Clayton Kershaw C. Kershaw	2,464	347	169	74	.695	344	2.44	25	15	0	2274.2	1,715	617	672	173	577	33	1	27	8,958	88	9.75	2.28	4.27	0.68	27.5	6.4	1.01	.270	2.66	63	2.73	69	6.79	313.2
8	Pedro Martinez P. Martinez	2,426	355	166	67	.712	288	2.58	41	15	3	2079.0	1,553	597	667	149	554	99	23	21	8,286	51	10.50	2.40	4.38	0.65	29.3	6.7	1.01	.278	2.89	58	2.63	61	6.72	401.3
9	Sandy Koufax S. Koufax	2,396	397	165	87	.655	314	2.76	137	40	9	2324.1	1,754	713	806	204	817	18	44	48	9,497	87	9.28	3.16	2.93	0.79	25.2	8.6	1.11	.256	3.12	75	2.69	75	6.79	226.6
10	Bob Gibson B. Gibson	2,393	383	190	117	.619	345	2.80	189	45	4	2816.2	2,323	876	993	183	949	80	17	70	11,593	74	7.65	3.03	2.52	0.58	20.6	8.2	1.16	.268	3.17	74	2.78	77	7.42	259.3
11	Tim Keefe T. Keefe	2,372	539	313	202	.608	534	2.58	506	37	2	4558.1	3,957	1,305	2,197	68	1,055	57	6		18,789	228	4.68	2.08	2.25	0.13	12.6	5.6	1.10	.255	4.34	78	2.87	87	7.81	217.1
12	Bert Blyleven B. Blyleven	2,357	407	167	148	.530	402	2.95	159	42	0	3000.2	2,699	984	1,103	215	810	75	3	49	12,273	66	7.07	2.43	2.91	0.64	19.2	6.6	1.17	.282	3.31	80	2.83	77	8.10	288.8
13	Fergie Jenkins F. Jenkins	2,344	450	203	150	.575	391	3.17	212	39	7	3111.0	2,763	1,097	1,217	319	633	63	31	87	12,600	42	6.78	1.83	3.70	0.92	18.6	5.0	1.09	.264	3.52	84	3.02	83	7.99	214.9
14	Roger Clemens R. Clemens	2,333	349	182	98	.650	348	3.00	94	36	0	2533.1	2,143	845	939	175	750	82	0	41	10,352	64	8.29	2.66	3.11	0.62	22.5	7.2	1.14	.281	3.34	69	2.88	70	7.61	347.5
15	Don Drysdale D. Drysdale	2,307	475	190	150	.559	422	2.98	154	40	6	3130.1	2,812	1,036	1,190	260	786	140	34	113	12,876	77	6.63	2.26	2.94	0.75	17.9	6.1	1.15	.272	3.42	83	3.03	86	8.08	170.2
16	Rube Waddell R. Waddell	2,300	397	190	142	.572	338	2.15	261	50	4	2928.1	2,429	698	1,044	36	792	114	48		11,577	74	7.07	2.43	2.90	0.11	19.9	6.8	1.10	.287	3.21	74	2.02	71	7.47	263.1
17	Sam McDowell S. McDowell	2,281	364	132	117	.530	320	3.09	101	22	11	2274.0	1,758	781	891	150	1,158	59	25	67	9,607	125	9.03	4.58	1.97	0.59	23.7	12.1	1.28	.270	3.53	88	2.97	82	6.96	167.3
18	Felix Hernandez F. Hernandez	2,264	359	154	109	.586	359	3.16	25	11	0	2415.2	2,157	848	946	203	695	81	0	16	9,906	132	8.43	2.59	3.26	0.76	22.9	7.0	1.18	.293	3.52	79	3.28	80	8.04	218.3
19	Javier Vazquez J. Vazquez	2,253	387	142	139	.505	385	4.19	26	7	0	2490.0	2,451	1,159	1,244	320	648	79	1	46	10,454	63	8.14	2.34	3.48	1.16	21.6	6.2	1.24	.298	4.50	94	3.82	85	8.86	180.4
20	Mark Langston M. Langston	2,252	383	166	141	.541	380	3.81	79	18	0	2648.2	2,370	1,120	1,241	265	1,145	43	1	26	11,164	79	7.65	3.89	1.97	0.90	20.2	10.3	1.33	.282	4.22	90	3.79	89	8.05	135.5
21	Gerrit Cole G. Cole	2,251	317	153	80	.657	317	3.18	8	5	0	1954.0	1,627	690	740	217	500	61	0	8	7,861	58	10.37	2.30	4.50	1.00	28.6	6.4	1.09	.292	3.41	79	3.16	77	7.49	213.5
22	Cole Hamels C. Hamels	2,227	363	147	102	.590	362	3.37	16	7	0	2362.1	2,104	884	943	264	645	74	0	42	9,678	49	8.48	2.46	3.45	1.01	23.0	6.7	1.16	.284	3.59	81	3.59	86	8.02	149.7
23	Bob Feller B. Feller	2,227	419	208	123	.628	363	3.09	229	37	20	2929.0	2,389	1,004	1,120	146	1,433	43	42		12,356	65	6.84	4.40	1.55	0.45	18.0	11.6	1.30	.264	3.44	76	3.34	84	7.34	208.8
24	Don Sutton D. Sutton	2,224	435	190	144	.569	420	3.04	134	47	3	3052.1	2,608	1,031	1,132	232	804	53	10	67	12,437	74	6.56	2.37	2.77	0.68	17.9	6.5	1.12	.260	3.34	90	2.92	87	7.69	146.4
25	CC Sabathia	2,214	383	191	102	.652	383	3.50	35	12	0	2564.1	2,361	998	1,095	227	769	81	0	34	10,622	50	7.77	2.70	2.88	0.80	20.8	7.2	1.22	.291	3.84	80	3.49	80	8.29	242