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 JackJ ChesbroChesbro P 1 ‌ ‌ ‌	1904	NYH	41	12	1.82	55	51	48	6	0	--	454.2	338	128	92	4	7	88	239	0.94	.208
2 EdE WalshWalsh P 2 ‌ ‌ ‌	1908	CWS	40	15	1.42	66	49	42	11	6	--	464.0	343	111	73	2	9	56	269	0.86	.203
3 WalterW JohnsonJohnson P 3 ‌ ‌ ‌	1913	WAS	36	7	1.14	48	36	29	11	2	--	346.0	232	56	44	9	9	38	243	0.78	.187
4 JoeJ WoodWood P 4 ‌ ‌ ‌	1912	BOS	34	5	1.91	43	38	35	10	1	--	344.0	267	104	73	2	12	82	258	1.01	.216
5 CyC YoungYoung P 5 ‌ ‌ ‌	1901	BOS	33	10	1.62	43	41	38	5	0	--	371.1	324	112	67	6	7	37	158	0.97	.232
5 WalterW JohnsonJohnson P 5 ‌ ‌ ‌	1912	WAS	33	12	1.39	50	37	34	7	2	--	369.0	259	89	57	2	16	76	303	0.91	.196
7 CyC YoungYoung P 7 ‌ ‌ ‌	1902	BOS	32	11	2.15	45	43	41	3	0	--	384.2	350	136	92	6	13	53	160	1.05	.243
8 DennyD McLainMcLain P 8 ‌ ‌ ‌	1968	DET	31	6	1.96	41	41	28	6	0	--	336.0	241	86	73	31	6	63	280	0.90	.200
8 JimJ Bagby Sr.Bagby P 8 ‌ ‌ ‌	1920	CLE	31	12	2.89	48	38	30	3	0	--	339.2	338	122	109	9	5	79	73	1.23	.266
8 LeftyL GroveGrove P 8 ‌ ‌ ‌	1931	PHA	31	4	2.06	41	30	27	4	5	--	288.2	249	84	66	10	1	62	175	1.08	.229
8 JackJ CoombsCoombs P 8 ‌ ‌ ‌	1910	PHA	31	9	1.30	45	38	35	13	1	--	353.0	248	74	51	0	7	115	224	1.03	.201
12 EddieE CicotteCicotte P 12 ‌ ‌ ‌	1919	CWS	29	7	1.82	40	35	30	5	1	--	306.2	256	77	62	5	2	49	110	0.99	.228
12 GeorgeG MullinMullin P 12 ‌ ‌ ‌	1909	DET	29	8	2.22	40	35	29	3	1	--	303.2	258	96	75	1	8	78	124	1.11	.234
12 HalH NewhouserNewhouser P 12 ‌ ‌ ‌	1944	DET	29	9	2.22	47	34	25	6	2	--	312.1	264	94	77	6	1	102	187	1.17	.230
15 CyC YoungYoung P 15 ‌ ‌ ‌	1903	BOS	28	9	2.08	40	35	34	7	2	--	341.2	294	115	79	6	9	37	176	0.97	.232
15 JackJ CoombsCoombs P 15 ‌ ‌ ‌	1911	PHA	28	12	3.53	47	40	26	1	2	--	336.2	360	166	132	8	16	119	185	1.42	.280
15 LeftyL GroveGrove P 15 ‌ ‌ ‌	1930	PHA	28	5	2.54	50	32	22	2	9	--	291.0	273	101	82	8	5	60	209	1.14	.247
15 WalterW JohnsonJohnson P 15 ‌ ‌ ‌	1914	WAS	28	18	1.72	51	40	33	9	1	--	371.2	287	88	71	3	11	74	225	0.97	.217
15 EddieE CicotteCicotte P 15 ‌ ‌ ‌	1917	CWS	28	12	1.53	49	35	29	7	4	--	346.2	246	76	59	2	3	70	150	0.91	.203
20 AddieA JossJoss P 20 ‌ ‌ ‌	1907	CLE	27	11	1.83	42	38	34	6	2	--	338.2	279	100	69	3	7	54	127	0.98	.227
20 WalterW JohnsonJohnson P 20 ‌ ‌ ‌	1915	WAS	27	13	1.55	47	39	35	7	4	--	336.2	258	83	58	1	19	56	203	0.93	.214
20 BobB FellerFeller P 20 ‌ ‌ ‌	1940	CLE	27	11	2.61	43	37	31	4	4	--	320.1	245	102	93	13	5	118	261	1.13	.210
20 EdE WalshWalsh P 20 ‌ ‌ ‌	1911	CWS	27	18	2.22	56	37	33	5	4	--	368.2	327	125	91	4	7	72	255	1.08	.239
20 RubeR WaddellWaddell P 20 ‌ ‌ ‌	1905	PHA	27	10	1.48	46	34	27	7	0	--	328.2	231	86	54	5	10	90	287	0.98	.200
20 UrbanU ShockerShocker P 20 ‌ ‌ ‌	1921	SLB	27	12	3.55	47	38	30	4	4	--	326.2	345	151	129	21	6	86	132	1.32	.270

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