most wins in a season by a pitcher since 1917

Since 1917, Denny McLain, Lefty Grove and Jim Bagby are tied for winning the most games in a season, with 31 wins.

	NAME	W	SEASON	TM	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Denny McLain D. McLain	31	1968	DET	6	.838	41	41	1.96	280	28	6	0	336.0	241	73	86	31	63	6	0	2	1,288	3	7.50	1.69	4.44	0.83	21.7	4.9	0.90	.231	2.30	64	2.53	79	6.46	24.8
2	Lefty Grove L. Grove	31	1931	PHA	4	.886	41	30	2.06	175	27	4	5	288.2	249	66	84	10	62	1	10		1,160	2	5.46	1.93	2.82	0.31	15.1	5.3	1.08	.262	2.62	47	3.01	70	7.76	40.8
3	Jim Bagby J. Bagby	31	1920	CLE	12	.721	48	38	2.89	73	30	3	0	339.2	338	109	122	9	79	5	9		1,355	6	1.93	2.09	0.92	0.24	5.4	5.8	1.23	.277	3.23	75	3.41	92	8.96	12
4	Dizzy Dean D. Dean	30	1934	SLN	7	.811	50	33	2.66	195	24	7	7	311.2	288	92	110	14	75	6	14		1,291	2	5.63	2.17	2.60	0.40	15.1	5.8	1.16	.274	3.18	64	3.23	77	8.32	32.6
5	Grover Alexander G. Alexander	30	1917	PHN	13	.698	45	44	1.83	200	34	8	0	388.0	336	79	107	4	56	6	0		1,529	1	4.64	1.30	3.57	0.09	13.1	3.7	1.01	.263	2.48	65	1.84	69	7.79	36.4
6	Hal Newhouser H. Newhouser	29	1944	DET	9	.763	47	34	2.22	187	25	6	2	312.1	264	77	94	6	102	1	10		1,271	4	5.39	2.94	1.83	0.17	14.7	8.0	1.17	.265	2.71	62	2.58	72	7.61	34.5
7	Eddie Cicotte E. Cicotte	29	1919	CWS	7	.806	40	35	1.82	110	30	5	1	306.2	256	62	77	5	49	2	5		1,176	1	3.23	1.44	2.24	0.15	9.4	4.2	0.99	.249	2.26	57	2.48	79	7.51	22.5
8	Robin Roberts R. Roberts	28	1952	PHN	7	.800	39	37	2.59	148	30	3	2	330.0	292	95	104	22	45	5	2		1,310	3	4.04	1.23	3.29	0.60	11.3	3.4	1.02	.248	2.84	72	2.82	78	7.96	28.9
9	Dizzy Dean D. Dean	28	1935	SLN	12	.700	50	36	3.04	190	29	3	5	325.1	324	110	126	16	77	4	14		1,362	1	5.26	2.13	2.47	0.44	14.0	5.7	1.23	.287	3.49	74	3.27	79	8.96	31
10	Lefty Grove L. Grove	28	1930	PHA	5	.848	50	32	2.54	209	22	2	9	291.0	273	82	101	8	60	5	17		1,191	2	6.46	1.86	3.48	0.25	17.5	5.0	1.14	.292	3.12	53	3.09	64	8.44	55.6
11	Dazzy Vance D. Vance	28	1924	BKN	6	.824	35	34	2.16	262	30	3	0	308.1	238	74	89	11	77	9	1		1,221	4	7.65	2.25	3.40	0.32	21.5	6.3	1.02	.263	2.60	58	2.64	69	6.95	41.3
12	Eddie Cicotte E. Cicotte	28	1917	CWS	12	.700	49	35	1.53	150	29	7	4	346.2	246	59	76	2	70	3	11		1,287	1	3.89	1.82	2.14	0.05	11.7	5.4	0.91	.230	1.97	58	2.10	76	6.39	26.2
13	Bob Welch B. Welch	27	1990	OAK	6	.818	35	35	2.95	127	2	2	0	238.0	214	78	90	26	77	5	0	4	979	2	4.80	2.91	1.65	0.98	13.0	7.9	1.22	.253	3.40	79	4.19	110	8.09	-11.1
14	Steve Carlton S. Carlton	27	1972	PHI	10	.730	41	41	1.97	310	30	8	0	346.1	257	76	84	17	87	1	0	8	1,351	8	8.06	2.26	3.56	0.44	22.9	6.4	0.99	.256	2.18	56	2.00	59	6.68	53.5
15	Sandy Koufax S. Koufax	27	1966	LAD	9	.750	41	41	1.73	317	27	5	0	323.0	241	62	74	19	77	0	0	4	1,274	7	8.83	2.15	4.12	0.53	24.9	6.0	0.98	.258	2.06	53	2.07	65	6.72	41.8
16	Don Newcombe D. Newcombe	27	1956	BKN	7	.794	38	36	3.06	139	18	5	0	268.0	219	91	101	33	46	3	2	8	1,052	4	4.67	1.54	3.02	1.11	13.2	4.4	0.99	.224	3.39	78	3.48	86	7.35	17.3
17	Dizzy Trout D. Trout	27	1944	DET	14	.659	49	40	2.12	144	33	7	0	352.1	314	83	104	9	83	4	6		1,421	2	3.68	2.12	1.73	0.23	10.1	5.8	1.13	.258	2.66	59	2.79	78	8.02	31
18	Bob Feller B. Feller	27	1940	CLE	11	.711	43	37	2.61	261	31	4	4	320.1	245	93	102	13	118	5	5		1,304	8	7.33	3.32	2.21	0.37	20.0	9.0	1.13	.256	2.87	65	2.89	73	6.88	39.3
19	Bucky Walters B. Walters	27	1939	CIN	11	.711	39	36	2.29	137	31	2	0	319.0	250	81	98	15	109	6	2		1,283	8	3.87	3.08	1.26	0.42	10.7	8.5	1.13	.231	2.76	60	3.81	96	7.05	4.8
20	George Uhle G. Uhle	27	1926	CLE	11	.711	39	36	2.83	159	32	3	1	318.1	300	100	114	7	118	13	2		1,367	8	4.50	3.34	1.35	0.20	11.6	8.6	1.31	.274	3.22	70	3.44	85	8.48	21.7
21	Dolf Luque D. Luque	27	1923	CIN	8	.771	41	37	1.93	151	28	6	2	322.0	279	69	90	2	88	5	4		1,301	4	4.22	2.46	1.72	0.06	11.6	6.8	1.14	.263	2.52	50	2.94	77	7.80	31
22	Eddie Rommel E. Rommel	27	1922	PHA	13	.675	51	33	3.28	54	22	3	2	294.0	294	107	128	21	63	5	16		1,203	3	1.65	1.93	0.86	0.64	4.5	5.2	1.21	.258	3.92	80	4.26	102	9.00	-2.3
23	Carl Mays C. Mays	27	1921	NYY	9	.750	49	38	3.05	70	30	1	7	336.2	332	114	145	11	76	9	10		1,400	2	1.87	2.03	0.92	0.29	5.0	5.4	1.21	.260	3.88	71	3.87	93	8.88	11.3
24	Urban Shocker U. Shocker	27	1921	SLA	12	.692	47	38	3.55	132	30	4	4	326.2	345	129	151	21	86	6	8		1,401	3	3.64	2.37	1.53	0.58	9.4	6.1	1.32	.280	4.16	81	3.98	93	9.51	12.2
25	Grover Alexander G. Alexander	27	1920	CHC	14	.659	46	40	1.91	173	33	7	5	363.1	335	77	96	8	69	1	6		1,447	3	4.29	1.71	2.51	0.20	12.0	4.8	1.11	.273	2.38	61	2.66	81	8.30	25