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 MilesM MikolasMikolas P 1 ‌ ‌ ‌	2024	STL	10	11	5.35	32	32	0	0	0	0	171.2	194	106	102	26	5	25	122	1.28	.284
2 RickyR NolascoNolasco P 2 ‌ ‌ ‌	2009	FLA	13	9	5.06	31	31	2	0	0	0	185.0	188	111	104	23	2	44	195	1.25	.259
3 JonJ LieberLieber P 3 ‌ ‌ ‌	2006	PHI	9	11	4.93	27	27	2	1	0	0	168.0	196	100	92	27	6	24	100	1.31	.291
4 BrandonB PfaadtPfaadt P 4 ‌ ‌ ‌	2025	AZ	13	9	5.25	33	33	0	0	0	0	176.2	198	107	103	26	12	37	147	1.33	.279
5 RickR PorcelloPorcello P 5 ‌ ‌ ‌	2015	BOS	9	15	4.92	28	28	0	0	0	0	172.0	196	103	94	25	10	38	149	1.36	.287
6 CarlC PavanoPavano P 6 ‌ ‌ ‌	2009	MIN	14	12	5.10	33	33	1	1	0	0	199.1	235	119	113	26	6	39	147	1.37	.294
7 JamesJ ShieldsShields P 7 ‌ ‌ ‌	2010	TB	13	15	5.18	34	33	0	0	0	0	203.1	246	128	117	34	5	51	187	1.46	.294
8 BobB TewksburyTewksbury P 8 ‌ ‌ ‌	1994	STL	12	10	5.32	24	24	4	1	0	0	155.2	190	97	92	19	3	22	79	1.36	.304
9 JonJ GrayGray P 9 ‌ ‌ ‌	2018	COL	12	9	5.12	31	31	0	0	0	0	172.1	180	102	98	27	6	52	183	1.35	.266
10 DrewD SmylySmyly P 10 ‌ ‌ ‌	2016	TB	7	12	4.88	30	30	0	0	0	0	175.1	174	103	95	32	2	49	167	1.27	.259
11 DylanD BundyBundy P 11 ‌ ‌ ‌	2018	BAL	8	16	5.45	31	31	1	0	0	0	171.2	188	116	104	41	6	54	184	1.41	.274
12 JeffJ SamardzijaSamardzija P 12 ‌ ‌ ‌	2015	CWS	11	13	4.96	32	32	2	2	0	0	214.0	228	122	118	29	12	49	163	1.29	.273
13 JoséJ BerríosBerríos P 13 ‌ ‌ ‌	2022	TOR	12	7	5.23	32	32	0	0	0	0	172.0	199	103	100	29	11	45	149	1.42	.288
14 KyleK FreelandFreeland P 14 ‌ ‌ ‌	2025	COL	5	17	4.98	31	31	0	0	0	0	162.2	193	105	90	22	6	38	124	1.42	.294
15 KevinK TapaniTapani P 15 ‌ ‌ ‌	2000	CHC	8	12	5.01	30	30	2	0	0	0	195.2	208	113	109	35	8	47	150	1.30	.271
16 RickR PorcelloPorcello P 16 ‌ ‌ ‌	2019	BOS	14	12	5.52	32	32	0	0	0	0	174.1	198	114	107	31	6	45	143	1.39	.278
17 RobbieR RayRay P 17 ‌ ‌ ‌	2016	AZ	8	15	4.90	32	32	0	0	0	0	174.1	185	105	95	24	6	71	218	1.47	.267
18 DaveD BushBush P 18 ‌ ‌ ‌	2007	MIL	12	10	5.12	33	31	0	0	0	0	186.1	217	110	106	27	11	44	134	1.40	.290
19 FrankF CastilloCastillo P 19 ‌ ‌ ‌	1996	CHC	7	16	5.28	33	33	1	1	0	0	182.1	209	112	107	28	8	46	139	1.40	.288
20 JasonJ HammelHammel P 20 ‌ ‌ ‌	2017	KC	8	13	5.29	32	32	0	0	0	0	180.1	209	109	106	26	9	48	145	1.43	.284
20 JeremyJ BondermanBonderman P 20 ‌ ‌ ‌	2007	DET	11	9	5.01	28	28	0	0	0	0	174.1	193	105	97	23	4	48	145	1.38	.278
22 KyleK GibsonGibson P 22 ‌ ‌ ‌	2022	PHI	10	8	5.05	31	31	0	0	0	0	167.2	176	98	94	24	9	48	144	1.34	.268
23 BruceB ChenChen P 23 ‌ ‌ ‌	2012	KC	11	14	5.07	34	34	0	0	0	0	191.2	215	114	108	33	8	47	140	1.37	.281
24 BobbyB JonesJones P 24 ‌ ‌ ‌	2001	SD	8	19	5.12	33	33	1	0	0	0	195.0	250	137	111	37	4	38	113	1.48	.305
25 ChrisC BosioBosio P 25 ‌ ‌ ‌	1987	MIL	11	8	5.29	46	19	2	1	2	2	170.0	187	104	100	18	1	51	150	1.40	.276

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