mariners player with most so as a pitcher in 1 season

Randy Johnson has fanned the most hitters for the Mariners in a season, with 308 strikeouts in 1993.

	NAME	SO	SEASON	TM	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	308	1993	SEA	35	19	8	.704	34	3.24	10	3	1	255.1	185	92	97	22	99	16	1	1	1,043	8	10.86	3.49	3.11	0.78	29.5	9.5	1.11	.273	3.42	74	3.04	70	6.52	36.2
2	Randy Johnson R. Johnson	294	1995	SEA	30	18	2	.900	30	2.48	6	3	0	214.1	159	59	65	12	65	6	0	1	866	5	12.35	2.73	4.52	0.50	33.9	7.5	1.05	.301	2.73	53	2.08	44	6.68	62
3	Randy Johnson R. Johnson	291	1997	SEA	30	20	4	.833	29	2.28	5	2	0	213.0	147	54	60	20	77	10	0	2	850	4	12.30	3.25	3.78	0.85	34.2	9.1	1.05	.281	2.54	50	2.82	62	6.21	41.3
4	Mark Langston M. Langston	262	1987	SEA	35	19	13	.594	35	3.84	14	3	0	272.0	242	116	132	30	114	5	0	0	1,152	9	8.67	3.77	2.30	0.99	22.7	9.9	1.31	.286	4.37	84	3.68	79	8.01	29.5
5	Felix Hernandez F. Hernandez	248	2014	SEA	34	15	6	.714	34	2.14	0	0	0	236.0	170	56	68	16	46	5	0	1	912	18	9.46	1.75	5.39	0.61	27.2	5.0	0.92	.258	2.59	58	2.56	69	6.48	30.7
6	Mark Langston M. Langston	245	1986	SEA	37	12	14	.462	36	4.85	9	0	0	239.1	234	129	142	30	123	4	1	1	1,057	10	9.21	4.63	1.99	1.13	23.2	11.6	1.49	.311	5.34	113	3.93	90	8.80	11.4
7	Randy Johnson R. Johnson	241	1992	SEA	31	12	14	.462	31	3.77	6	2	0	210.1	154	88	104	13	144	18	0	1	922	13	10.31	6.16	1.67	0.56	26.1	15.6	1.42	.279	4.45	96	3.60	91	6.59	7.9
8	Mark Langston M. Langston	235	1988	SEA	35	15	11	.577	35	3.34	9	3	0	261.1	222	97	108	32	110	3	0	2	1,078	7	8.09	3.79	2.14	1.10	21.8	10.2	1.27	.272	3.72	81	3.85	94	7.65	7.7
9	Felix Hernandez F. Hernandez	232	2010	SEA	34	13	12	.520	34	2.27	6	1	0	249.2	194	63	80	17	70	8	0	1	1,001	14	8.36	2.52	3.31	0.61	23.2	7.0	1.06	.263	2.88	58	3.04	75	6.99	28.4
10	Randy Johnson R. Johnson	228	1991	SEA	33	13	10	.565	33	3.98	2	1	0	201.1	151	89	96	15	152	12	0	0	889	12	10.19	6.79	1.50	0.67	25.6	17.1	1.50	.282	4.29	96	4.00	99	6.75	1
11	Felix Hernandez F. Hernandez	223	2012	SEA	33	13	9	.591	33	3.06	5	5	0	232.0	209	79	84	14	56	12	0	0	939	13	8.65	2.17	3.98	0.54	23.7	6.0	1.14	.308	3.26	80	2.83	71	8.11	31
12	Felix Hernandez F. Hernandez	222	2011	SEA	33	14	14	.500	33	3.47	5	0	0	233.2	218	90	99	19	67	7	0	0	964	12	8.55	2.58	3.31	0.73	23.0	7.0	1.22	.307	3.81	90	3.13	80	8.40	20.9
13	Logan Gilbert L. Gilbert	220	2024	SEA	33	9	12	.429	33	3.23	1	0	0	208.2	148	75	83	26	37	4	0	1	803	11	9.49	1.60	5.95	1.12	27.4	4.6	0.89	.236	3.58	86	3.26	83	6.38	15.6
14	Luis Castillo L. Castillo	219	2023	SEA	33	13	9	.591	33	3.34	0	0	0	197.0	160	73	81	28	56	5	0	0	802	3	10.01	2.56	3.91	1.28	27.3	7.0	1.10	.267	3.70	83	3.80	93	7.31	6.6
15	Felix Hernandez F. Hernandez	217	2009	SEA	34	19	5	.792	34	2.49	2	1	0	238.2	200	66	81	15	71	8	0	0	977	17	8.18	2.68	3.06	0.57	22.2	7.3	1.14	.278	3.05	58	3.08	71	7.54	33.4
16	Felix Hernandez F. Hernandez	216	2013	SEA	31	12	10	.545	31	3.04	0	0	0	204.1	185	69	74	15	46	3	0	1	823	13	9.51	2.03	4.70	0.66	26.2	5.6	1.13	.313	3.26	79	2.60	67	8.15	29.5
17	Randy Johnson R. Johnson	213	1998	SEA	23	9	10	.474	23	4.33	6	2	0	160.0	146	77	90	19	60	11	0	0	685	7	11.98	3.38	3.55	1.07	31.1	8.8	1.29	.332	5.06	93	3.34	73	8.21	22.4
18	Robbie Ray R. Ray	212	2022	SEA	32	12	12	.500	32	3.71	0	0	0	189.0	163	78	80	32	62	7	0	0	775	5	10.10	2.95	3.42	1.52	27.4	8.0	1.19	.284	3.81	100	4.16	109	7.76	-7.6
19	Erik Hanson E. Hanson	211	1990	SEA	33	18	9	.667	33	3.24	5	1	0	236.0	205	85	88	15	68	2	0	6	964	10	8.05	2.59	3.10	0.57	21.9	7.1	1.16	.284	3.36	81	2.73	68	7.82	32.6
20	Floyd Bannister F. Bannister	209	1982	SEA	35	12	13	.480	35	3.43	5	3	0	247.0	225	94	112	32	77	3	0	0	1,022	6	7.62	2.81	2.71	1.17	20.5	7.5	1.22	.275	4.08	82	3.67	85	8.20	17.2
21	James Paxton J. Paxton	208	2018	SEA	28	11	6	.647	28	3.76	2	1	0	160.1	134	67	67	23	42	1	0	0	645	8	11.68	2.36	4.95	1.29	32.2	6.5	1.10	.299	3.76	92	3.23	77	7.52	17.1
22	Randy Johnson R. Johnson	204	1994	SEA	23	13	6	.684	23	3.19	9	4	0	172.0	132	61	65	14	72	6	0	2	694	5	10.67	3.77	2.83	0.73	29.4	10.4	1.19	.296	3.40	67	3.17	67	6.91	29.9
23	Mark Langston M. Langston	204	1984	SEA	35	17	10	.630	33	3.40	5	2	0	225.0	188	85	99	16	118	8	0	5	965	4	8.16	4.72	1.73	0.64	21.1	12.2	1.36	.278	3.96	84	3.55	85	7.52	15.4
24	Bryan Woo B. Woo	198	2025	SEA	30	15	7	.682	30	2.94	0	0	0	186.2	137	61	64	26	36	4	0	0	731	3	9.55	1.74	5.50	1.25	27.1	4.9	0.93	.238	3.09	77	3.46	86	6.61	11.4
25	Randy Johnson R. Johnson	194	1990	SEA	33	14	11	.560	33	3.65	5	2	0	219.2	174	89	103	26	120	5	0	2	944	4	7.95	4.92	1.62	1.07	20.6	12.7	1.34	.247	4.22	92	4.28	107	7.13	-6.8