Sandy Koufax won the most games in 1966, with 27 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	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
2	Jim Kaat J. Kaat	25	1966	MIN	13	.658	41	41	2.75	205	19	3	0	304.2	271	93	114	29	55	3	0	4	1,227	12	6.06	1.62	3.73	0.86	16.7	4.5	1.07	.259	3.37	77	3.02	82	8.01	22.7
3	Juan Marichal J. Marichal	25	1966	SFG	6	.806	37	36	2.23	222	25	4	0	307.1	228	76	88	32	36	5	1	3	1,180	3	6.50	1.05	6.17	0.94	18.8	3.1	0.86	.221	2.58	62	2.86	82	6.68	21.3
4	Bob Gibson B. Gibson	21	1966	STL	12	.636	35	35	2.44	225	20	5	0	280.1	210	76	90	20	78	5	0	5	1,119	12	7.22	2.50	2.88	0.64	20.1	7.0	1.03	.240	2.89	68	2.76	80	6.74	21.5
5	Gaylord Perry G. Perry	21	1966	SFG	8	.724	36	35	2.99	201	13	3	0	255.2	242	85	92	15	40	5	0	3	1,035	7	7.08	1.41	5.03	0.53	19.4	3.9	1.10	.293	3.24	83	2.27	65	8.52	34.5
6	Denny McLain D. McLain	20	1966	DET	14	.588	38	38	3.92	192	14	4	0	264.1	205	115	120	42	104	3	0	3	1,080	6	6.54	3.54	1.85	1.43	17.8	9.6	1.17	.221	4.09	113	4.38	122	6.98	-22.9
7	Chris Short C. Short	20	1966	PHI	10	.667	42	39	3.54	177	19	4	0	272.0	257	107	120	28	68	9	2	2	1,118	6	5.86	2.25	2.60	0.93	15.8	6.1	1.19	.274	3.97	99	3.44	100	8.50	0.3
8	Jim Bunning J. Bunning	19	1966	PHI	14	.576	43	41	2.41	252	16	5	1	314.0	260	84	91	26	55	19	2	8	1,254	5	7.22	1.58	4.58	0.75	20.1	4.4	1.00	.259	2.61	67	2.73	79	7.45	25.2
9	Earl Wilson E. Wilson	18	1966	TOT	11	.621	38	37	3.07	200	13	3	0	264.0	214	90	94	30	74	6	1	3	1,059	9	6.82	2.52	2.70	1.02	18.9	7.0	1.09	.246	3.20	86	3.43	93	7.30	8.2
10	Claude Osteen C. Osteen	17	1966	LAD	14	.548	39	38	2.85	137	8	3	0	240.1	238	76	92	6	65	2	1	13	1,005	5	5.13	2.43	2.11	0.22	13.6	6.5	1.26	.292	3.45	87	2.57	81	8.91	16.3
11	Jim Maloney J. Maloney	16	1966	CIN	8	.667	32	32	2.80	216	10	5	0	224.2	174	70	75	18	90	10	0	4	930	8	8.65	3.61	2.40	0.72	23.2	9.7	1.18	.262	3.00	73	3.01	81	6.97	17.7
12	Sonny Siebert S. Siebert	16	1966	CLE	8	.667	34	32	2.80	163	11	1	1	241.0	193	75	89	25	62	6	1	3	957	8	6.09	2.32	2.63	0.93	17.0	6.5	1.06	.240	3.32	82	3.40	96	7.21	4.2
13	Bob Veale B. Veale	16	1966	PIT	12	.571	38	37	3.02	229	12	3	0	268.1	228	90	99	18	102	5	0	6	1,111	10	7.68	3.42	2.25	0.60	20.6	9.2	1.23	.277	3.32	84	2.92	84	7.65	17.1
14	Dave Giusti D. Giusti	15	1966	HOU	14	.517	34	33	4.20	131	9	4	0	210.0	215	98	112	23	54	5	0	3	892	14	5.61	2.31	2.43	0.99	14.7	6.1	1.28	.283	4.80	120	3.57	106	9.21	-4.9
15	Larry Jackson L. Jackson	15	1966	TOT	15	.500	38	35	3.32	112	12	5	0	255.0	257	94	106	25	62	5	1	5	1,057	3	3.95	2.19	1.81	0.88	10.6	5.9	1.25	.272	3.74	92	3.74	108	9.07	-7.9
16	Jim Palmer J. Palmer	15	1966	BAL	10	.600	30	30	3.46	147	6	0	0	208.1	176	80	83	21	91	0	0	1	867	7	6.35	3.93	1.62	0.91	17.0	10.5	1.28	.255	3.59	102	3.76	107	7.60	-5.8
17	Gary Bell G. Bell	14	1966	CLE	15	.483	40	37	3.22	194	12	0	0	254.1	211	91	102	19	79	4	1	3	1,028	9	6.87	2.80	2.46	0.67	18.9	7.7	1.14	.262	3.61	94	2.98	84	7.47	16.3
18	Tony Cloninger T. Cloninger	14	1966	ATL	11	.560	39	38	4.12	178	11	1	1	257.2	253	118	134	29	116	6	1	9	1,132	27	6.22	4.05	1.53	1.01	15.7	10.2	1.43	.279	4.68	113	4.06	115	8.84	-15
19	Tommy John T. John	14	1966	CWS	11	.560	34	33	2.62	138	10	5	0	223.0	195	65	76	13	57	7	0	4	904	10	5.57	2.30	2.42	0.52	15.3	6.3	1.13	.264	3.07	81	2.94	88	7.87	9.9
20	Ken Johnson K. Johnson	14	1966	ATL	8	.636	32	31	3.30	105	11	2	0	215.2	213	79	89	24	46	0	0	6	872	1	4.38	1.92	2.28	1.00	12.0	5.3	1.20	.271	3.71	91	3.67	104	8.89	-3.3
21	Lew Krausse L. Krausse	14	1966	KCA	9	.609	36	22	2.99	87	4	1	3	177.2	144	59	69	8	63	6	6	8	733	6	4.41	3.19	1.38	0.41	11.9	8.6	1.17	.239	3.50	85	3.33	92	7.29	6
22	Mickey Lolich M. Lolich	14	1966	DET	14	.500	40	33	4.77	173	5	1	2	203.2	204	108	119	24	83	6	4	8	894	11	7.64	3.67	2.08	1.06	19.4	9.3	1.41	.296	5.26	138	3.70	103	9.01	-2.3
23	Phil Regan P. Regan	14	1966	LAD	1	.933	65	0	1.62	88	0	0	21	116.2	85	21	24	6	24	0	48	9	445	4	6.79	1.85	3.67	0.46	19.8	5.4	0.93	.242	1.85	49	2.33	73	6.56	11.4
24	Pete Richert P. Richert	14	1966	WSH	14	.500	36	34	3.37	195	7	0	0	245.2	196	92	106	36	69	1	0	6	993	4	7.14	2.53	2.83	1.32	19.6	6.9	1.08	.231	3.88	99	3.73	106	7.18	-5.9
25	George Brunet G. Brunet	13	1966	CAL	13	.500	41	32	3.31	148	8	2	0	212.0	183	78	88	21	106	5	3	8	913	4	6.28	4.50	1.40	0.89	16.2	11.6	1.36	.256	3.74	100	4.02	118	7.77	-15.3