Randy Johnson and Nolan Ryan were tied for playing the most seasons with 300+ strikeouts, with 6 seasons.

Interpreted as:

most years 300 or more strikeouts pitcher

	NAME	SEAS	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	Randy Johnson R. Johnson	6	2,054	209	119	46	.721	207	2.74	51	20	1	1529.2	1,175	465	526	143	473	76	2	9	6,166	35	12.08	2.78	4.34	0.84	33.3	7.7	1.08	.302	3.09	61	2.66	59	6.91	307.5
2	Nolan Ryan N. Ryan	6	2,048	230	114	92	.553	227	2.89	121	29	1	1765.1	1,178	566	643	92	1,006	49	3	21	7,357	87	10.44	5.13	2.04	0.47	27.8	13.7	1.24	.261	3.28	83	2.75	78	6.01	157.3
3	Curt Schilling C. Schilling	3	935	106	55	32	.632	105	3.15	27	5	0	782.1	662	274	292	77	152	14	0	7	3,115	23	10.76	1.75	6.15	0.89	30.0	4.9	1.04	.302	3.36	73	2.59	61	7.62	145.2
4	Sandy Koufax S. Koufax	3	1,005	124	78	22	.780	122	1.88	74	24	2	969.2	671	203	232	63	206	8	2	15	3,781	24	9.33	1.91	4.88	0.58	26.6	5.4	0.90	.243	2.15	59	1.95	63	6.23	131.6
5	Amos Rusie A. Rusie	3	982	193	94	85	.525	181	2.65	167	12	2	1590.0	1,237	469	834	16	821	56	12		6,860	77	5.56	4.65	1.20	0.09	14.3	12.0	1.29	.245	4.72	80	3.18	92	7.00	41.9
6	Tim Keefe T. Keefe	3	1,028	177	113	56	.669	177	2.17	172	17	0	1536.1	1,185	371	583	16	269	12	0		6,190	63	6.02	1.58	3.82	0.09	16.6	4.3	0.95	.241	3.42	69	2.45	77	6.94	119.5
7	Pedro Martinez P. Martinez	2	618	62	40	12	.769	60	1.98	18	5	0	454.2	318	100	121	25	104	18	1	6	1,782	9	12.23	2.06	5.94	0.49	34.7	5.8	0.93	.288	2.40	44	1.91	44	6.29	128.4
8	J.R. Richard	2	616	74	36	24	.600	74	2.90	35	7	0	567.2	412	183	202	25	239	5	0	9	2,314	35	9.77	3.79	2.58	0.40	26.6	10.3	1.15	.271	3.20	86	2.34	68	6.53	72.4
9	Sam McDowell S. McDowell	2	629	81	37	23	.617	74	2.57	33	4	4	578.0	414	165	188	34	263	13	7	17	2,373	34	9.79	4.10	2.39	0.53	26.5	11.1	1.17	.265	2.93	70	2.60	67	6.45	79.1
10	Walter Johnson W. Johnson	2	616	95	58	29	.667	79	1.38	72	15	3	739.0	521	113	181	3	152	29	16		2,780	32	7.50	1.85	4.05	0.04	22.2	5.5	0.91	.262	2.20	49	1.71	59	6.35	94.8
11	Rube Waddell R. Waddell	2	651	85	46	35	.568	84	2.00	73	12	0	707.0	581	157	218	8	176	22	1		2,787	17	8.29	2.24	3.70	0.10	23.4	6.3	1.07	.297	2.78	70	1.72	62	7.40	83.4
12	Toad Ramsey T. Ramsey	2	854	132	75	54	.581	131	2.93	127	3	0	1149.2	991	374	655	12	374	16	1		4,907	81	6.69	2.93	2.28	0.09	17.4	7.6	1.19	.269	5.13	75	2.89	76	7.76	118.9
13	John Clarkson J. Clarkson	2	621	125	89	33	.730	125	2.09	118	13	0	1089.2	916	253	503	40	183		0		4,401	31	5.13	1.51	3.39	0.33	14.1	4.2	1.01		4.15	64	2.82	84	7.57	80.4
14	Ed Morris E. Morris	2	628	116	75	33	.694	115	2.33	110	15	1	985.0	790	255	403	8	169		1		3,955	44	5.74	1.54	3.72	0.07	15.9	4.3	0.97	.250	3.68	74	2.58	82	7.22	47
15	Old Hoss Radbourn O. Hoss Radbourn	2	756	151	107	37	.743	141	1.70	139	15	3	1311.0	1,091	248	491	25	154		10		5,212	70	5.19	1.06	4.91	0.17	14.5	3.0	0.95		3.37	58	2.71	86	7.49	49.8
16	Gerrit Cole G. Cole	1	326	33	20	5	.800	33	2.50	0	0	0	212.1	142	59	66	29	48	3	0	0	817	4	13.82	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	55	2.63	58	6.02	45
17	Justin Verlander J. Verlander	1	300	34	21	6	.778	34	2.58	2	1	0	223.0	137	64	66	36	42	6	0	0	847	4	12.11	1.70	7.14	1.45	35.4	5.0	0.80	.218	2.66	57	3.26	72	5.53	31.5
18	Max Scherzer M. Scherzer	1	300	33	18	7	.720	33	2.53	2	1	0	220.2	150	62	66	23	51	12	0	4	866	4	12.24	2.08	5.88	0.94	34.6	5.9	0.91	.265	2.69	62	2.65	64	6.12	36.1
19	Chris Sale C. Sale	1	308	32	17	8	.680	32	2.90	1	0	0	214.1	165	69	73	24	43	8	0	0	851	3	12.93	1.81	7.16	1.01	36.2	5.1	0.97	.301	3.07	63	2.45	56	6.93	45.5
20	Clayton Kershaw C. Kershaw	1	301	33	16	7	.696	33	2.13	4	3	0	232.2	163	55	62	15	42	5	0	1	890	9	11.64	1.62	7.17	0.58	33.8	4.7	0.88	.281	2.40	57	1.98	52	6.31	47.7
21	Mike Scott M. Scott	1	306	37	18	10	.643	37	2.22	7	5	0	275.1	182	68	73	17	72	2	0	6	1,065	3	10.00	2.35	4.25	0.56	28.7	6.8	0.92	.247	2.39	63	2.15	61	5.95	43.6
22	Steve Carlton S. Carlton	1	310	41	27	10	.730	41	1.97	30	8	0	346.1	257	76	84	17	87	1	0	8	1,351	8	8.06	2.26	3.56	0.44	22.9	6.4	0.99	.256	2.18	56	2.00	59	6.68	53.5
23	Vida Blue V. Blue	1	301	39	24	8	.750	39	1.82	24	8	0	312.0	209	63	73	19	88	4	0	3	1,207	10	8.68	2.54	3.42	0.55	24.9	7.3	0.95	.239	2.11	56	2.19	66	6.03	41.4
24	Mickey Lolich M. Lolich	1	308	45	25	14	.641	45	2.92	29	4	0	376.0	336	122	133	36	92	7	0	2	1,538	7	7.37	2.20	3.35	0.86	20.0	6.0	1.14	.274	3.18	83	2.84	78	8.04	32.5
25	Bob Feller B. Feller	1	348	48	26	15	.634	42	2.18	36	10	4	371.1	277	90	101	11	153	3	5		1,512	3	8.43	3.71	2.27	0.27	23.0	10.1	1.16	.267	2.45	65	2.16	65	6.71	48.3