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 EdE ReulbachReulbach P 1 ‌ ‌ ‌	1906	CHC	19	4	1.65	33	24	20	6	3	--	218.0	129	51	40	2	13	92	94	1.01	.175
2 DaveD McNallyMcNally P 2 ‌ ‌ ‌	1968	BAL	22	10	1.95	35	35	18	5	0	--	273.0	175	67	59	24	10	55	202	0.84	.182
3 CarlC LundgrenLundgren P 3 ‌ ‌ ‌	1907	CHC	18	7	1.17	28	25	21	7	0	--	207.0	130	42	27	0	2	92	84	1.07	.185
4 CatfishC HunterHunter P 4 ‌ ‌ ‌	1972	OAK	21	7	2.04	38	37	16	5	0	0	295.1	200	74	67	21	3	70	191	0.91	.189
5 TrevorT BauerBauer P 5 ‌ ‌ ‌	2020	CIN	5	4	1.73	11	11	2	2	0	0	73.0	41	17	14	9	3	17	100	0.79	.159
6 JoeJ HorlenHorlen P 6 ‌ ‌ ‌	1967	CWS	19	7	2.06	35	35	13	6	0	--	258.0	188	66	59	13	4	58	103	0.95	.203
7 AllenA SothoronSothoron P 7 ‌ ‌ ‌	1918	SLB	12	12	1.94	29	24	14	2	0	--	209.0	152	64	45	3	3	67	71	1.05	.199
8 LuisL TiantTiant P 8 ‌ ‌ ‌	1968	CLE	21	9	1.60	34	32	19	9	0	--	258.1	152	53	46	16	4	73	264	0.87	.168
9 EddieE FisherFisher P 9 ‌ ‌ ‌	1965	CWS	15	7	2.40	82	0	0	0	24	--	165.1	118	51	44	13	2	43	90	0.97	.205
10 JoeJ HorlenHorlen P 10 ‌ ‌ ‌	1964	CWS	13	9	1.88	32	28	9	2	0	--	210.2	142	54	44	11	4	55	138	0.94	.190
11 BabeB RuthRuth RF 11 ‌ ‌ ‌	1918	BOS	13	7	2.22	20	19	18	1	0	--	166.1	125	51	41	1	2	49	40	1.05	.205
12 MordecaiM BrownBrown P 12 ‌ ‌ ‌	1908	CHC	29	9	1.47	44	31	27	9	5	--	312.1	214	64	51	1	5	49	123	0.84	.195
13 StanS CoveleskiCoveleski P 13 ‌ ‌ ‌	1917	CLE	19	14	1.81	45	36	24	9	4	--	298.1	202	78	60	3	1	94	133	0.99	.194
14 AddieA JossJoss P 14 ‌ ‌ ‌	1908	CLE	24	11	1.16	42	35	29	9	2	--	325.0	232	77	42	2	2	30	130	0.81	.197
15 PascualP PerezPerez P 15 ‌ ‌ ‌	1988	MON	12	8	2.44	27	27	4	2	0	0	188.0	133	59	51	15	7	44	131	0.94	.196
16 RogerR NelsonNelson P 16 ‌ ‌ ‌	1972	KC	11	6	2.08	34	19	10	6	2	2	173.1	120	41	40	13	1	31	120	0.87	.196
17 MordecaiM BrownBrown P 17 ‌ ‌ ‌	1904	CHC	15	10	1.86	26	23	21	4	1	--	212.1	155	74	44	1	6	50	81	0.97	.199
18 HenryH GruberGruber P 18 ‌ ‌ ‌	1888	DET	11	14	2.29	27	25	25	3	0	--	240.0	196	121	61	8	4	41	71	0.99	.213
19 JuanJ MarichalMarichal P 19 ‌ ‌ ‌	1966	SF	25	6	2.23	37	36	25	4	0	--	307.1	228	88	76	32	5	36	222	0.86	.202
20 FrankF KillenKillen P 20 ‌ ‌ ‌	1891	MIL	7	4	1.68	11	11	11	2	0	--	96.2	73	42	18	1	3	51	38	1.28	.202
21 JoeJ McGinnityMcGinnity P 21 ‌ ‌ ‌	1904	NYG	35	8	1.61	51	44	38	9	5	--	408.0	307	103	73	8	13	86	144	0.96	.206
22 CyC MorganMorgan P 22 ‌ ‌ ‌	1909	PHA	18	17	1.81	40	36	26	5	1	--	293.1	204	75	59	3	22	102	111	1.04	.202
23 MickeyM WelchWelch P 23 ‌ ‌ ‌	1888	NYG	26	19	1.93	47	47	47	5	0	--	425.1	328	156	91	12	14	108	167	1.03	.207
24 SilverS KingKing P 24 ‌ ‌ ‌	1888	STL	45	21	1.64	66	65	64	6	0	--	585.2	437	205	107	6	30	76	258	0.88	.200
25 DonD SuttonSutton P 25 ‌ ‌ ‌	1972	LA	19	9	2.08	33	33	18	9	0	0	272.2	186	78	63	13	4	63	207	0.91	.189

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