All-Time MLB Player Pitching Stat Leaders by Season

PLAYER	YEAR	TEAM	W	L	ERA	G	GS	CG	SHO	SV	SVO	IP	H	R	ER	HR	HB	BB	SO	WHIP	AVG
1 MattM KilroyKilroy P 1 ‌ ‌ ‌	1886	BAL	29	34	3.37	68	68	66	5	0	--	583.0	476	350	218	10	19	182	513	1.13	.210
2 ToadT RamseyRamsey P 2 ‌ ‌ ‌	1886	LOU	38	27	2.45	67	67	66	3	0	--	588.2	447	297	160	3	12	207	499	1.11	.198
3 HughH DailyDaily P 3 ‌ ‌ ‌	1884	CUN	28	28	2.43	58	58	56	5	0	--	500.2	446	268	135	11		72	483	1.03	--
4 DupeeD ShawShaw P 4 ‌ ‌ ‌	1884	DET	30	33	2.30	67	66	60	5	0	--	543.1	446	281	139	9		109	451	1.02	--
5 Old HossO RadbournRadbourn P 5 ‌ ‌ ‌	1884	PRO	59	12	1.38	75	73	73	11	1	--	678.2	528	216	104	18		98	441	0.92	--
6 CharlieC BuffintonBuffinton P 6 ‌ ‌ ‌	1884	BSN	48	16	2.15	67	67	63	8	0	--	587.0	506	225	140	15		76	417	0.99	--
7 GuyG HeckerHecker P 7 ‌ ‌ ‌	1884	LOU	52	20	1.80	75	73	72	6	0	--	670.2	526	230	134	4	16	56	385	0.87	.204
8 NolanN RyanRyan P 8 ‌ ‌ ‌	1973	CAL	21	16	2.87	41	39	26	4	1	1	326.0	238	113	104	18	7	162	383	1.23	.203
9 SandyS KoufaxKoufax P 9 ‌ ‌ ‌	1965	LA	26	8	2.04	43	41	27	8	2	--	335.2	216	90	76	26	5	71	382	0.86	.179
10 BillB SweeneySweeney P 10 ‌ ‌ ‌	1884	BAL	40	21	2.59	62	60	58	4	0	--	538.0	522	294	155	13		74	374	1.11	--
11 RandyR JohnsonJohnson P 11 ‌ ‌ ‌	2001	AZ	21	6	2.49	35	34	3	2	0	0	249.2	181	74	69	19	18	71	372	1.01	.203
12 PudP GalvinGalvin P 12 ‌ ‌ ‌	1884	BUF	46	22	1.99	72	72	71	12	0	--	636.1	566	254	141	23		63	369	0.99	--
13 MarkM BaldwinBaldwin P 13 ‌ ‌ ‌	1889	COL	27	34	3.61	63	59	54	6	1	--	513.2	458	358	206	9	20	274	368	1.43	.231
14 NolanN RyanRyan P 14 ‌ ‌ ‌	1974	CAL	22	16	2.89	42	41	26	3	0	0	332.2	221	127	107	18	9	202	367	1.27	.190
15 RandyR JohnsonJohnson P 15 ‌ ‌ ‌	1999	AZ	17	9	2.48	35	35	12	2	0	0	271.2	207	86	75	30	9	70	364	1.02	.208
16 TimT KeefeKeefe P 16 ‌ ‌ ‌	1883	NYM	41	27	2.41	68	68	68	5	0	--	619.0	488	244	166	6		108	359	0.96	--
17 ToadT RamseyRamsey P 17 ‌ ‌ ‌	1887	LOU	37	27	3.43	65	64	61	0	0	--	561.0	544	358	214	9	16	167	355	1.27	.242
18 RubeR WaddellWaddell P 18 ‌ ‌ ‌	1904	PHA	25	19	1.62	46	46	39	8	0	--	383.0	307	109	69	5	14	91	349	1.04	.221
19 BobB FellerFeller P 19 ‌ ‌ ‌	1946	CLE	26	15	2.18	48	42	36	10	4	--	371.1	277	101	90	11	3	153	348	1.16	.208
20 RandyR JohnsonJohnson P 20 ‌ ‌ ‌	2000	AZ	19	7	2.64	35	35	8	3	0	0	248.2	202	89	73	23	6	76	347	1.12	.224
21 HardieH HendersonHenderson P 21 ‌ ‌ ‌	1884	BAL	27	23	2.62	52	52	50	4	0	--	439.1	382	235	128	9	16	116	346	1.13	.216
22 JimJ WhitneyWhitney P 22 ‌ ‌ ‌	1883	BSN	37	21	2.24	62	56	54	1	2	--	514.0	492	258	128	7		35	345	1.03	--
22 MickeyM WelchWelch P 22 ‌ ‌ ‌	1884	NYG	39	21	2.50	65	65	62	4	0	--	557.1	528	275	155	12		146	345	1.21	--
24 JimJ McCormickMcCormick P 24 ‌ ‌ ‌	1884	CLE	40	25	2.37	66	65	63	10	0	--	569.0	508	263	150	20		89	343	1.05	--
25 NolanN RyanRyan P 25 ‌ ‌ ‌	1977	CAL	19	16	2.77	37	37	22	4	0	0	299.0	198	110	92	12	9	204	341	1.34	.193

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