most innings pitched in a single season in the last 50 years

Between October 29, 1975 and October 29, 2025, Phil Niekro has pitched the most innings in a season, with 342 innings in 1979.

Interpreted as:

most innings pitched by a player in a single season in the last 50 years

	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	H/9
1	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	8.18
2	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	7.94
3	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	8.58
4	Jim Palmer J. Palmer	319.0	1977	BAL	39	20	11	.645	39	2.91	193	22	3	0	263	103	106	24	99	3	0	1	1,269	7	5.45	2.79	1.95	0.68	15.2	7.8	1.13	.252	2.99	7.42
5	Randy Jones R. Jones	315.1	1976	SDP	40	22	14	.611	40	2.74	93	25	5	0	274	96	109	15	50	4	0	9	1,251	0	2.65	1.43	1.86	0.43	7.4	4.0	1.03	.238	3.11	7.82
6	Jim Palmer J. Palmer	315.0	1976	BAL	40	22	13	.629	40	2.51	159	23	6	0	255	88	101	20	84	8	0	5	1,256	5	4.54	2.40	1.89	0.57	12.7	6.7	1.08	.239	2.89	7.29
7	Steve Carlton S. Carlton	304.0	1980	PHI	38	24	9	.727	38	2.34	286	13	3	0	243	79	87	15	90	2	0	12	1,228	17	8.47	2.66	3.18	0.44	23.3	7.3	1.10	.273	2.58	7.19
8	Dave Goltz D. Goltz	303.0	1977	MIN	39	20	11	.645	39	3.36	186	19	2	0	284	113	129	23	91	2	0	4	1,254	9	5.52	2.70	2.04	0.68	14.8	7.3	1.24	.274	3.83	8.44
9	Steve Rogers S. Rogers	301.2	1977	MON	40	17	16	.515	40	3.10	206	17	4	0	272	104	122	16	81	5	0	3	1,235	14	6.15	2.42	2.54	0.48	16.7	6.6	1.17	.276	3.64	8.11
10	Nolan Ryan N. Ryan	299.0	1977	CAL	37	19	16	.543	37	2.77	341	22	4	0	198	92	110	12	204	9	0	7	1,272	21	10.26	6.14	1.67	0.36	26.8	16.0	1.34	.263	3.31	5.96
11	Catfish Hunter C. Hunter	298.2	1976	NYY	36	17	15	.531	36	3.53	173	21	2	0	268	117	126	28	68	3	0	5	1,210	6	5.21	2.05	2.54	0.84	14.3	5.6	1.13	.256	3.80	8.08
12	Vida Blue V. Blue	298.1	1976	OAK	37	18	13	.581	37	2.35	166	20	6	0	268	78	90	9	63	1	0	3	1,205	5	5.01	1.90	2.63	0.27	13.8	5.2	1.11	.268	2.72	8.08
13	Bert Blyleven B. Blyleven	297.2	1976	TOT	36	13	16	.448	36	2.87	219	18	6	0	283	95	106	14	81	12	0	6	1,225	7	6.62	2.45	2.70	0.42	17.9	6.6	1.22	.299	3.20	8.56
14	Jim Palmer J. Palmer	296.0	1978	BAL	38	21	12	.636	38	2.46	138	19	6	0	246	81	94	19	97	1	0	1	1,197	5	4.20	2.95	1.42	0.58	11.5	8.1	1.16	.241	2.86	7.48
15	Steve Carlton S. Carlton	295.2	1982	PHI	38	23	11	.676	38	3.10	286	19	6	0	253	102	114	17	86	1	0	5	1,193	9	8.71	2.62	3.33	0.52	24.0	7.2	1.15	.294	3.47	7.70
16	Dennis Leonard D. Leonard	294.2	1978	KCR	40	21	17	.553	40	3.33	183	20	4	0	283	109	125	27	78	9	0	7	1,218	12	5.59	2.38	2.35	0.82	15.0	6.4	1.23	.278	3.82	8.64
17	Bert Blyleven B. Blyleven	293.2	1985	TOT	37	17	16	.515	37	3.16	206	24	5	0	264	103	121	23	75	9	0	1	1,203	4	6.31	2.30	2.75	0.70	17.1	6.2	1.15	.271	3.71	8.09
18	Jack Morris J. Morris	293.2	1983	DET	37	20	13	.606	37	3.34	232	20	1	0	257	109	117	30	83	3	0	5	1,204	18	7.11	2.54	2.80	0.92	19.3	6.9	1.16	.265	3.59	7.88
19	Mike Caldwell M. Caldwell	293.1	1978	MIL	37	22	9	.710	34	2.36	131	23	6	1	258	77	90	14	54	7	1	3	1,176	8	4.02	1.66	2.43	0.43	11.1	4.6	1.06	.252	2.76	7.92
20	Dennis Leonard D. Leonard	292.2	1977	KCR	38	20	12	.625	37	3.04	244	21	5	1	246	99	117	18	79	8	1	0	1,186	14	7.50	2.43	3.09	0.55	20.6	6.7	1.11	.272	3.60	7.56
21	Jim Slaton J. Slaton	292.2	1976	MIL	38	14	15	.483	38	3.44	138	12	2	0	287	112	126	14	94	6	0	12	1,235	11	4.24	2.89	1.47	0.43	11.2	7.6	1.30	.278	3.87	8.83
22	Dennis Martinez D. Martinez	292.1	1979	BAL	40	15	16	.484	39	3.66	132	18	3	0	279	119	129	28	78	1	0	1	1,206	9	4.06	2.40	1.69	0.86	10.9	6.5	1.22	.260	3.97	8.59
23	J.R. Richard	292.1	1979	HOU	38	18	13	.581	38	2.71	313	19	4	0	220	88	98	13	98	3	0	5	1,175	19	9.64	3.02	3.19	0.40	26.6	8.3	1.09	.277	3.02	6.77
24	J.R. Richard	291.0	1976	HOU	39	20	15	.571	39	2.75	214	14	3	0	221	89	105	14	151	4	0	4	1,218	13	6.62	4.67	1.42	0.43	17.6	12.4	1.28	.248	3.25	6.84
25	Rick Langford R. Langford	290.0	1980	OAK	35	19	12	.613	33	3.26	102	28	2	0	276	105	119	29	64	1	2	6	1,166	7	3.17	1.99	1.59	0.90	8.7	5.5	1.17	.255	3.69	8.57