All-Time MLB Player Pitching Stat Leaders by Season

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PLAYER	YEAR	TEAM	W	L	ERA	G	GS	CG	SHO	SV	SVO	IP	H	R	ER	HR	HB	BB	SO	WHIP	AVG
1 RandyR JohnsonJohnson P 1 ‌ ‌ ‌	1993	SEA	19	8	3.24	35	34	10	3	1	1	255.1	185	97	92	22	16	99	308	1.11	.203
2 RandyR JohnsonJohnson P 2 ‌ ‌ ‌	1995	SEA	18	2	2.48	30	30	6	3	0	0	214.1	159	65	59	12	6	65	294	1.05	.201
3 RandyR JohnsonJohnson P 3 ‌ ‌ ‌	1997	SEA	20	4	2.28	30	29	5	2	0	0	213.0	147	60	54	20	10	77	291	1.05	.194
4 MarkM LangstonLangston P 4 ‌ ‌ ‌	1987	SEA	19	13	3.84	35	35	14	3	0	0	272.0	242	132	116	30	5	114	262	1.31	.238
5 FélixF HernándezHernández P 5 ‌ ‌ ‌	2014	SEA	15	6	2.14	34	34	0	0	0	0	236.0	170	68	56	16	5	46	248	0.92	.200
6 MarkM LangstonLangston P 6 ‌ ‌ ‌	1986	SEA	12	14	4.85	37	36	9	0	0	0	239.1	234	142	129	30	4	123	245	1.49	.255
7 RandyR JohnsonJohnson P 7 ‌ ‌ ‌	1992	SEA	12	14	3.77	31	31	6	2	0	0	210.1	154	104	88	13	18	144	241	1.42	.206
8 MarkM LangstonLangston P 8 ‌ ‌ ‌	1988	SEA	15	11	3.34	35	35	9	3	0	0	261.1	222	108	97	32	3	110	235	1.27	.233
9 FélixF HernándezHernández P 9 ‌ ‌ ‌	2010	SEA	13	12	2.27	34	34	6	1	0	0	249.2	194	80	63	17	8	70	232	1.06	.212
10 RandyR JohnsonJohnson P 10 ‌ ‌ ‌	1991	SEA	13	10	3.98	33	33	2	1	0	0	201.1	151	96	89	15	12	152	228	1.50	.213
11 FélixF HernándezHernández P 11 ‌ ‌ ‌	2012	SEA	13	9	3.06	33	33	5	5	0	0	232.0	209	84	79	14	12	56	223	1.14	.241
12 FélixF HernándezHernández P 12 ‌ ‌ ‌	2011	SEA	14	14	3.47	33	33	5	0	0	0	233.2	218	99	90	19	7	67	222	1.22	.248
13 LoganL GilbertGilbert P 13 ‌ ‌ ‌	2024	SEA	9	12	3.23	33	33	1	0	0	0	208.2	148	83	75	26	4	37	220	0.89	.196
14 LuisL CastilloCastillo P 14 ‌ ‌ ‌	2023	SEA	14	9	3.34	33	33	0	0	0	0	197.0	160	81	73	28	5	56	219	1.10	.218
15 FélixF HernándezHernández P 15 ‌ ‌ ‌	2009	SEA	19	5	2.49	34	34	2	1	0	0	238.2	200	81	66	15	8	71	217	1.14	.227
16 FélixF HernándezHernández P 16 ‌ ‌ ‌	2013	SEA	12	10	3.04	31	31	0	0	0	0	204.1	185	74	69	15	3	46	216	1.13	.242
17 RandyR JohnsonJohnson P 17 ‌ ‌ ‌	1998	SEA	9	10	4.33	23	23	6	2	0	0	160.0	146	90	77	19	11	60	213	1.29	.240
18 RobbieR RayRay P 18 ‌ ‌ ‌	2022	SEA	12	12	3.71	32	32	0	0	0	0	189.0	163	80	78	32	7	62	212	1.19	.231
19 ErikE HansonHanson P 19 ‌ ‌ ‌	1990	SEA	18	9	3.24	33	33	5	1	0	0	236.0	205	88	85	15	2	68	211	1.16	.232
20 FloydF BannisterBannister P 20 ‌ ‌ ‌	1982	SEA	12	13	3.43	35	35	5	3	0	0	247.0	225	112	94	32	3	77	209	1.22	.243
21 JamesJ PaxtonPaxton P 21 ‌ ‌ ‌	2018	SEA	11	6	3.76	28	28	2	1	0	0	160.1	134	67	67	23	1	42	208	1.10	.224
22 MarkM LangstonLangston P 22 ‌ ‌ ‌	1984	SEA	17	10	3.40	35	33	5	2	0	0	225.0	188	99	85	16	8	118	204	1.36	.230
22 RandyR JohnsonJohnson P 22 ‌ ‌ ‌	1994	SEA	13	6	3.19	23	23	9	4	0	0	172.0	132	65	61	14	6	72	204	1.19	.216
24 RandyR JohnsonJohnson P 24 ‌ ‌ ‌	1990	SEA	14	11	3.65	33	33	5	2	0	0	219.2	174	103	89	26	5	120	194	1.34	.216
25 FélixF HernándezHernández P 25 ‌ ‌ ‌	2015	SEA	18	9	3.53	31	31	2	2	0	0	201.2	180	80	79	23	9	58	191	1.18	.240

Data validation provided by Elias Sports Bureau, the Official Statistician of Major League Baseball