most ip by a pitcher in a season after 1950

Since 1951, Wilbur Wood has pitched the most innings in a season, with 376.2 innings in 1972.

	NAME	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	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	Wilbur Wood W. Wood	376.2	1972	CWS	49	24	17	.585	49	2.51	193	20	8	0	325	105	119	28	74	7	0	5	1,490	11	4.61	1.77	2.61	0.67	13.0	5.0	1.06	.250	2.84	80	2.98	91	7.77	13.1
2	Mickey Lolich M. Lolich	376.0	1971	DET	45	25	14	.641	45	2.92	308	29	4	0	336	122	133	36	92	7	0	2	1,538	7	7.37	2.20	3.35	0.86	20.0	6.0	1.14	.274	3.18	83	2.84	78	8.04	32.5
3	Wilbur Wood W. Wood	359.1	1973	CWS	49	24	20	.545	48	3.46	199	21	4	0	381	138	166	25	91	7	1	3	1,531	7	4.98	2.28	2.19	0.63	13.0	5.9	1.31	.294	4.16	89	3.17	82	9.54	27.9
4	Robin Roberts R. Roberts	346.2	1953	PHN	44	23	16	.590	41	2.75	198	33	5	2	324	106	119	30	61	2	2		1,412	3	5.14	1.58	3.25	0.78	14.0	4.3	1.11	.262	3.09	66	3.12	75	8.41	41
5	Steve Carlton S. Carlton	346.1	1972	PHI	41	27	10	.730	41	1.97	310	30	8	0	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
6	Gaylord Perry G. Perry	344.0	1973	CLE	41	19	19	.500	41	3.38	238	29	7	0	315	129	143	34	115	5	0	9	1,410	17	6.23	3.01	2.07	0.89	16.9	8.2	1.25	.276	3.74	87	3.51	90	8.24	14.2
7	Gaylord Perry G. Perry	342.2	1972	CLE	41	24	16	.600	40	1.92	234	29	5	1	253	73	79	17	82	12	1	16	1,345	11	6.15	2.15	2.85	0.45	17.4	6.1	0.98	.236	2.07	60	2.49	74	6.64	31.9
8	Phil Niekro P. Niekro	342.0	1979	ATL	44	21	20	.512	44	3.39	208	23	1	0	311	129	160	41	113	11	0	8	1,436	18	5.47	2.97	1.84	1.08	14.5	7.9	1.24	.254	4.21	84	4.15	101	8.18	0.1
9	Robin Roberts R. Roberts	336.2	1954	PHN	45	23	15	.605	38	2.97	185	29	4	4	289	111	116	35	56	5	6		1,331	2	4.95	1.50	3.30	0.94	13.9	4.2	1.02	.242	3.10	74	3.19	80	7.73	29.3
10	Denny McLain D. McLain	336.0	1968	DET	41	31	6	.838	41	1.96	280	28	6	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
11	Sandy Koufax S. Koufax	335.2	1965	LAD	43	26	8	.765	41	2.04	382	27	8	2	216	76	90	26	71	5	2	4	1,297	11	10.24	1.90	5.38	0.70	29.5	5.5	0.86	.234	2.41	63	1.93	61	5.79	47.9
12	Phil Niekro P. Niekro	334.1	1978	ATL	44	19	18	.514	42	2.88	248	22	4	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
13	Wilbur Wood W. Wood	334.0	1971	CWS	44	22	13	.629	42	1.91	210	22	7	1	272	71	95	21	62	7	2	2	1,316	6	5.66	1.67	3.39	0.57	16.0	4.7	1.00	.247	2.56	53	2.63	71	7.33	38.9
14	Nolan Ryan N. Ryan	332.2	1974	CAL	42	22	16	.579	41	2.89	367	26	3	0	221	107	127	18	202	9	1	3	1,392	9	9.93	5.46	1.82	0.49	26.4	14.5	1.27	.255	3.44	85	2.97	84	5.98	20.2
15	Phil Niekro P. Niekro	330.1	1977	ATL	44	16	20	.444	43	4.03	262	20	2	0	315	148	166	26	164	8	1	12	1,428	17	7.14	4.47	1.60	0.71	18.3	11.5	1.45	.299	4.52	95	3.73	88	8.58	18.1
16	Robin Roberts R. Roberts	330.0	1952	PHN	39	28	7	.800	37	2.59	148	30	3	2	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
17	Gaylord Perry G. Perry	328.2	1970	SFG	41	23	13	.639	41	3.20	214	23	5	0	292	117	138	27	84	8	0	8	1,336	11	5.86	2.30	2.55	0.74	16.0	6.3	1.14	.264	3.78	80	3.24	85	8.00	20.5
18	Fergie Jenkins F. Jenkins	328.1	1974	TEX	41	25	12	.676	41	2.82	225	29	6	0	286	103	117	27	45	8	0	3	1,305	4	6.17	1.23	5.00	0.74	17.2	3.4	1.01	.259	3.21	79	2.75	77	7.84	29.4
19	Catfish Hunter C. Hunter	328.0	1975	NYY	39	23	14	.622	39	2.58	177	30	7	0	248	94	107	25	83	5	0	4	1,294	7	4.86	2.28	2.13	0.69	13.7	6.4	1.01	.222	2.94	70	3.29	88	6.80	16
20	Mickey Lolich M. Lolich	327.1	1972	DET	41	22	14	.611	41	2.50	250	23	4	0	282	91	100	29	74	11	0	5	1,321	6	6.87	2.03	3.38	0.80	18.9	5.6	1.09	.264	2.75	79	2.80	85	7.75	17.9
21	Nolan Ryan N. Ryan	326.0	1973	CAL	41	21	16	.568	39	2.87	383	26	4	1	238	104	113	18	162	7	2	2	1,355	15	10.57	4.47	2.36	0.50	28.3	12.0	1.23	.280	3.12	80	2.48	69	6.57	40.9
22	Juan Marichal J. Marichal	325.2	1968	SFG	38	26	9	.743	38	2.43	218	30	5	0	295	88	106	21	46	6	0	9	1,307	8	6.02	1.27	4.74	0.58	16.7	3.5	1.05	.270	2.93	83	2.36	85	8.15	14.6
23	Gaylord Perry G. Perry	325.1	1969	SFG	40	19	14	.576	39	2.49	233	26	3	0	290	90	115	23	91	11	1	14	1,345	12	6.45	2.52	2.56	0.64	17.3	6.8	1.17	.271	3.18	70	2.93	86	8.02	17.4
24	Bert Blyleven B. Blyleven	325.0	1973	MIN	40	20	17	.541	40	2.52	258	25	9	0	296	91	109	16	67	9	0	4	1,321	7	7.14	1.86	3.85	0.44	19.5	5.1	1.12	.288	3.02	63	2.31	58	8.20	57.6
25	Fergie Jenkins F. Jenkins	325.0	1971	CHC	39	24	13	.649	39	2.77	263	30	3	0	304	100	114	29	37	5	0	6	1,299	3	7.28	1.02	7.11	0.80	20.2	2.8	1.05	.285	3.16	73	2.38	64	8.42	45.3