highest strikeouts per 9 innings by a pitcher all-time minimum 400 games started

Max Scherzer has the highest career K/9 when starting 400+ games, with 10.63 per nine innings.

	NAME	K/9	GS	G	W	L	W%	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Max Scherzer M. Scherzer	10.63	466	475	217	114	.656	3.18	3,456	12	5	0	2925.0	2,387	1,032	1,105	345	767	114	2	20	11,818	79	2.36	4.51	1.06	29.2	6.5	1.08	.286	3.40	76	3.20	77	7.34	307.8
2	Randy Johnson R. Johnson	10.61	603	618	303	166	.646	3.29	4,875	100	37	2	4135.1	3,346	1,513	1,703	411	1,497	190	7	37	17,067	109	3.26	3.26	0.89	28.6	8.8	1.17	.291	3.71	75	3.18	73	7.28	554.3
3	Pedro Martinez P. Martinez	10.04	409	476	219	100	.687	2.93	3,154	46	17	3	2827.1	2,221	919	1,006	239	760	141	23	30	11,394	62	2.42	4.15	0.76	27.7	6.7	1.05	.279	3.20	66	2.91	68	7.07	454.6
4	Clayton Kershaw C. Kershaw	9.64	443	446	218	96	.694	2.52	3,014	25	15	0	2814.1	2,162	787	864	233	697	46	1	28	11,112	107	2.23	4.32	0.75	27.1	6.3	1.02	.271	2.76	64	2.84	70	6.91	369.9
5	Nolan Ryan N. Ryan	9.55	773	807	324	292	.526	3.19	5,714	222	61	3	5386.0	3,923	1,911	2,178	321	2,795	158	13	78	22,575	277	4.67	2.04	0.54	25.3	12.4	1.25	.265	3.64	90	2.96	83	6.56	370.2
6	Justin Verlander J. Verlander	8.97	545	545	263	155	.629	3.33	3,497	26	9	0	3510.0	2,993	1,297	1,405	366	987	120	0	27	14,363	99	2.53	3.54	0.94	24.3	6.9	1.13	.280	3.60	79	3.43	81	7.67	306
7	Charlie Morton C. Morton	8.71	401	408	145	133	.522	4.09	2,164	3	2	0	2237.1	2,112	1,016	1,115	221	837	197	1	27	9,610	70	3.37	2.59	0.89	22.5	8.7	1.32	.305	4.49	102	3.87	96	8.50	41.8
8	Curt Schilling C. Schilling	8.60	436	569	216	146	.597	3.46	3,116	83	20	22	3261.0	2,998	1,253	1,318	347	711	52	81	43	13,284	72	1.96	4.38	0.96	23.5	5.4	1.14	.293	3.64	80	3.22	76	8.27	373.6
9	Roger Clemens R. Clemens	8.55	707	709	354	184	.658	3.12	4,672	118	46	0	4916.2	4,185	1,707	1,885	363	1,580	159	0	63	20,240	143	2.89	2.96	0.66	23.1	7.8	1.17	.284	3.45	70	3.08	71	7.66	680.4
10	Cole Hamels C. Hamels	8.54	422	423	163	122	.572	3.43	2,560	17	7	0	2698.0	2,424	1,027	1,103	310	767	100	0	43	11,115	57	2.56	3.34	1.03	23.0	6.9	1.18	.287	3.68	82	3.68	88	8.09	151.3
11	Felix Hernandez F. Hernandez	8.32	418	419	169	136	.554	3.42	2,524	25	11	0	2729.2	2,487	1,037	1,157	264	805	105	0	16	11,284	156	2.65	3.14	0.87	22.4	7.1	1.21	.293	3.81	84	3.52	85	8.20	181.5
12	David Cone D. Cone	8.28	419	450	194	126	.606	3.46	2,668	56	22	1	2898.2	2,504	1,115	1,222	258	1,137	106	9	42	12,184	149	3.53	2.35	0.80	21.9	9.3	1.26	.280	3.79	84	3.56	85	7.77	190.9
13	A.J. Burnett	8.28	430	435	164	157	.511	3.99	2,513	24	10	0	2731.1	2,519	1,210	1,328	263	1,100	143	1	35	11,665	161	3.62	2.28	0.87	21.5	9.4	1.32	.295	4.38	97	3.86	92	8.30	97.3
14	Jon Lester J. Lester	8.17	451	452	200	117	.631	3.66	2,488	15	4	0	2740.0	2,610	1,114	1,215	294	892	90	0	13	11,487	63	2.93	2.79	0.97	21.7	7.8	1.28	.300	3.99	86	3.77	92	8.57	101.7
15	Javier Vazquez J. Vazquez	8.04	443	450	165	160	.508	4.22	2,536	28	8	0	2840.0	2,784	1,331	1,431	373	763	88	5	58	11,935	76	2.42	3.32	1.18	21.2	6.4	1.25	.295	4.53	96	3.90	88	8.82	164.4
16	John Smoltz J. Smoltz	7.99	481	723	213	155	.579	3.33	3,084	53	16	154	3473.0	3,074	1,284	1,391	288	1,010	57	204	84	14,271	145	2.62	3.05	0.75	21.6	7.1	1.18	.283	3.60	81	3.23	78	7.97	356.6
17	Zack Greinke Z. Greinke	7.91	541	586	225	156	.591	3.49	2,979	17	5	1	3389.1	3,207	1,315	1,410	367	762	79	8	25	13,877	101	2.02	3.91	0.97	21.5	5.5	1.17	.293	3.74	83	3.51	85	8.52	235
18	CC Sabathia	7.78	560	561	251	161	.609	3.74	3,093	38	12	0	3577.1	3,404	1,485	1,623	382	1,099	123	0	44	14,989	74	2.76	2.81	0.96	20.6	7.3	1.26	.294	4.08	87	3.77	87	8.56	223.7
19	James Shields J. Shields	7.69	405	407	145	139	.511	4.01	2,234	23	9	0	2616.0	2,581	1,167	1,267	361	746	97	1	22	10,993	107	2.57	2.99	1.24	20.3	6.8	1.27	.294	4.36	98	4.16	101	8.88	-13.5
20	Mark Langston M. Langston	7.49	428	457	179	158	.531	3.97	2,464	81	18	0	2962.2	2,723	1,306	1,438	311	1,289	46	3	34	12,562	89	3.92	1.91	0.94	19.6	10.3	1.35	.285	4.37	93	3.93	91	8.27	120.6
21	Adam Wainwright A. Wainwright	7.43	411	478	200	128	.610	3.53	2,202	28	11	3	2668.1	2,577	1,047	1,117	233	736	81	13	40	11,116	51	2.48	2.99	0.79	19.8	6.6	1.24	.298	3.77	88	3.53	87	8.69	152.8
22	Dwight Gooden D. Gooden	7.37	410	430	194	112	.634	3.51	2,293	68	24	3	2800.2	2,564	1,091	1,198	210	954	78	4	42	11,705	76	3.07	2.40	0.67	19.6	8.2	1.26	.288	3.85	90	3.32	83	8.24	182.1
23	Chuck Finley C. Finley	7.35	467	524	200	173	.536	3.85	2,610	63	15	0	3197.1	3,069	1,366	1,517	304	1,332	76	24	36	13,638	130	3.75	1.96	0.86	19.1	9.8	1.38	.297	4.27	87	3.90	88	8.64	189.7
24	John Lackey J. Lackey	7.27	446	448	188	147	.561	3.92	2,294	18	8	0	2840.1	2,862	1,237	1,347	319	815	133	0	32	12,030	125	2.58	2.81	1.01	19.1	6.8	1.29	.300	4.27	92	3.94	94	9.07	79.6
25	Bob Gibson B. Gibson	7.22	482	528	251	174	.591	2.91	3,117	255	56	6	3884.1	3,279	1,258	1,420	257	1,336	102	21	118	16,068	108	3.10	2.33	0.60	19.4	8.3	1.19	.268	3.29	78	2.89	81	7.60	290.5