Cy Young had the most complete games by a pitcher in his 15th season, with 40 complete games in 1904.

	NAME	CG	SEASON	TM	G	W	L	W%	GS	ERA	SO	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	Cy Young C. Young	40	1904	BSA	43	26	16	.619	41	1.97	200	10	1	380.0	327	83	104	6	29	4	2		1,435	4	4.74	0.69	6.90	0.14	13.9	2.0	0.94	.268	2.46	74	1.83	72	7.74	31.1
2	Christy Mathewson C. Mathewson	29	1914	NYG	41	24	13	.649	35	3.00	80	5	2	312.0	314	104	133	16	23	2	6		1,251	7	2.31	0.66	3.48	0.46	6.4	1.8	1.08	.264	3.84	111	2.83	98	9.06	0.5
3	Walter Johnson W. Johnson	25	1921	WSH	35	17	14	.548	32	3.51	143	1	1	264.0	265	103	122	7	92	2	2		1,119	7	4.88	3.14	1.55	0.24	12.8	8.2	1.35	.295	4.16	85	3.43	86	9.03	16.4
4	Eddie Plank E. Plank	23	1915	SLF	42	21	11	.656	31	2.08	147	6	3	268.1	212	62	75	1	54	3	10		1,028	4	4.93	1.81	2.72	0.03	14.3	5.3	0.99	.256	2.52	67	2.00	66	7.11	30.8
5	Phil Niekro P. Niekro	22	1978	ATL	44	19	18	.514	42	2.88	248	4	1	334.1	295	107	129	16	102	13	1	5	1,389	11	6.68	2.75	2.43	0.43	17.9	7.3	1.19	.276	3.47	73	2.74	72	7.94	38.1
6	Red Ruffing R. Ruffing	22	1938	NYY	31	21	7	.750	31	3.31	127	3	0	247.1	246	91	104	16	82	0	0		1,043	1	4.62	2.98	1.55	0.58	12.2	7.9	1.33	.281	3.78	72	3.73	85	8.95	18.7
7	Gaylord Perry G. Perry	21	1976	TEX	32	15	14	.517	32	3.24	143	2	0	250.1	232	90	93	14	52	0	0	3	1,005	1	5.14	1.87	2.75	0.50	14.2	5.2	1.13	.274	3.34	93	2.84	82	8.34	17.5
8	Warren Spahn W. Spahn	21	1959	MIL	40	21	15	.583	36	2.96	143	4	0	292.0	282	96	106	21	70	1	3	9	1,203	2	4.41	2.16	2.04	0.65	11.9	5.8	1.21	.270	3.27	82	3.23	92	8.69	8.7
9	Grover Alexander G. Alexander	20	1925	CHC	32	15	11	.577	30	3.39	63	1	0	236.0	270	89	106	15	29	3	1		977	1	2.40	1.11	2.17	0.57	6.4	3.0	1.27	.294	4.04	79	3.81	88	10.30	13.2
10	Sad Sam Jones S. Sam Jones	19	1928	WSH	30	17	7	.708	27	2.84	63	4	0	224.2	209	71	89	5	78	3	2		928	5	2.52	3.12	0.81	0.20	6.8	8.4	1.28	.262	3.57	71	3.72	96	8.37	3.8
11	Herb Pennock H. Pennock	18	1927	NYY	34	19	8	.704	26	3.00	51	1	3	209.2	225	70	89	5	48	2	7		880	0	2.19	2.06	1.06	0.21	5.8	5.5	1.30	.284	3.82	76	3.57	91	9.66	8.2
12	Jack Powell J. Powell	18	1911	SLA	31	8	19	.296	27	3.29	52	1	1	207.2	224	76	120	7	44	7	4		906	2	2.25	1.91	1.18	0.30	5.7	4.9	1.29	.273	5.20	101	3.44	110	9.71	-7.9
13	Charlie Hough C. Hough	17	1984	TEX	36	16	14	.533	36	3.76	164	1	0	266.0	260	111	127	26	94	9	0	3	1,133	12	5.55	3.18	1.74	0.88	14.5	8.3	1.33	.279	4.30	95	3.96	101	8.80	-1.1
14	Lefty Grove L. Grove	17	1939	BSA	23	15	4	.789	23	2.54	81	2	0	191.0	180	54	63	8	58	1	0		798	0	3.82	2.73	1.40	0.38	10.2	7.3	1.25	.265	2.97	53	3.60	78	8.48	20.9
15	Early Wynn E. Wynn	16	1955	CLE	32	17	11	.607	31	2.82	122	6	0	230.0	207	72	86	19	80	3	1	3	964	3	4.77	3.13	1.53	0.74	12.7	8.3	1.25	.254	3.37	71	3.46	89	8.10	11.2
16	Dutch Leonard D. Leonard	16	1948	PHN	34	12	17	.414	30	2.51	92	1	0	225.2	226	63	85	9	54	4	2		920	4	3.67	2.15	1.70	0.36	10.0	5.9	1.24	.285	3.39	65	3.13	80	9.01	20.1
17	Bobo Newsom B. Newsom	16	1945	PHA	36	8	20	.286	34	3.29	127	3	0	257.1	255	94	111	12	103	3	1		1,116	2	4.44	3.60	1.23	0.42	11.4	9.2	1.39	.279	3.88	97	3.39	97	8.92	3.1
18	Dolf Luque D. Luque	16	1930	BKN	31	14	8	.636	24	4.30	62	2	2	199.0	221	95	107	18	58	0	5		849	5	2.80	2.62	1.07	0.81	7.3	6.8	1.40	.286	4.84	88	4.93	102	9.99	-2.7
19	Clarence Mitchell C. Mitchell	16	1929	SLN	25	8	11	.421	22	4.27	39	0	0	173.0	221	82	89	13	60	5	2		773	4	2.03	3.12	0.65	0.68	5.0	7.8	1.62	.317	4.63	90	4.82	104	11.50	-3.8
20	Red Faber R. Faber	16	1928	CWS	27	13	9	.591	27	3.75	43	2	0	201.1	223	84	98	11	68	4	0		876	1	1.92	3.04	0.63	0.49	4.9	7.8	1.45	.283	4.38	95	4.26	111	9.97	-10.1
21	Paul Derringer P. Derringer	15	1945	CHC	35	16	11	.593	30	3.45	86	1	4	213.2	223	82	99	8	51	1	5		901	2	3.62	2.15	1.69	0.34	9.5	5.7	1.28	.285	4.17	93	2.95	81	9.39	16.1
22	Claude Osteen C. Osteen	14	1972	LAD	33	20	11	.645	33	2.64	100	4	0	252.0	232	74	82	16	69	4	0	4	1,033	5	3.57	2.46	1.45	0.57	9.7	6.7	1.19	.256	2.93	81	3.29	105	8.29	-5.9
23	Milt Pappas M. Pappas	14	1971	CHC	35	17	14	.548	35	3.51	99	5	0	261.1	279	102	109	25	62	5	0	6	1,099	6	3.41	2.14	1.60	0.86	9.0	5.6	1.30	.280	3.75	92	3.70	100	9.61	1.4
24	Steve Carlton S. Carlton	13	1979	PHI	35	18	11	.621	35	3.62	213	4	0	251.0	202	101	112	25	89	5	0	11	1,029	10	7.64	3.19	2.39	0.90	20.7	8.6	1.16	.254	4.02	94	3.44	90	7.24	11.3
25	Bob Gibson B. Gibson	13	1973	STL	25	12	10	.545	25	2.77	142	1	0	195.0	159	60	71	12	57	3	0	6	790	6	6.55	2.63	2.49	0.55	18.0	7.2	1.11	.255	3.28	76	2.82	77	7.34	18.5