most runs allowed by a pitcher in a season after 1945

Since 1946, Phil Niekro and Wilbur Wood are tied for giving up the most runs in a season, with 166 runs.

	NAME	R	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	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	Phil Niekro P. Niekro	166	1977	ATL	44	16	20	.444	43	4.03	262	20	2	0	330.1	315	148	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
2	Wilbur Wood W. Wood	166	1973	CWS	49	24	20	.545	48	3.46	199	21	4	0	359.1	381	138	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
3	Pedro Astacio P. Astacio	160	1998	COL	35	13	14	.481	34	6.23	170	0	0	0	209.1	245	145	39	74	17	0	0	938	2	7.31	3.18	2.30	1.68	18.1	7.9	1.52	.323	6.88	119	5.23	110	10.53	-8.7
4	Phil Niekro P. Niekro	160	1979	ATL	44	21	20	.512	44	3.39	208	23	1	0	342.0	311	129	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
5	Joe Coleman J. Coleman	160	1974	DET	41	14	12	.538	41	4.32	177	11	2	0	285.2	272	137	30	158	12	0	13	1,262	13	5.58	4.98	1.12	0.95	14.0	12.5	1.51	.273	5.04	114	4.48	120	8.57	-22.6
6	Charlie Hough C. Hough	159	1987	TEX	40	18	13	.581	40	3.79	223	13	0	0	285.1	238	120	36	124	19	0	1	1,231	12	7.03	3.91	1.80	1.14	18.1	10.1	1.27	.244	5.02	83	4.44	99	7.51	2.1
7	Alex Kellner A. Kellner	157	1950	PHA	36	8	20	.286	29	5.47	85	15	0	2	225.1	253	137	28	112	2	5		1,023	8	3.39	4.47	0.76	1.12	8.3	10.9	1.62	.283	6.27	118	4.96	110	10.11	-11.5
8	Herm Wehmeier H. Wehmeier	157	1950	CIN	41	10	18	.357	32	5.67	121	12	0	4	230.0	255	145	27	135	4	7		1,058	11	4.73	5.28	0.90	1.06	11.4	12.8	1.70	.296	6.14	136	4.87	113	9.98	-14
9	Jaime Navarro J. Navarro	155	1997	CWS	33	9	14	.391	33	5.79	142	2	0	0	209.2	267	135	22	73	3	0	6	957	14	6.10	3.13	1.95	0.94	14.8	7.6	1.62	.342	6.65	131	4.20	95	11.46	5.5
10	Mickey Lolich M. Lolich	155	1974	DET	41	16	21	.432	41	4.15	202	27	3	0	308.0	310	142	38	78	3	0	11	1,263	10	5.90	2.28	2.59	1.11	16.0	6.2	1.26	.289	4.53	109	3.65	98	9.06	3.2
11	Robin Roberts R. Roberts	155	1956	PHI	43	19	18	.514	37	4.45	157	22	1	3	297.1	328	147	46	40	2	6	3	1,228	2	4.75	1.21	3.93	1.39	12.8	3.3	1.24	.287	4.69	119	3.75	97	9.93	3.8
12	Harry Byrd H. Byrd	155	1953	PHA	40	11	20	.355	37	5.51	122	11	2	0	236.2	279	145	23	115	14	0		1,090	6	4.64	4.37	1.06	0.87	11.2	10.6	1.66	.314	5.89	134	4.46	108	10.61	-7.7
13	Jose Lima J. Lima	152	2000	HOU	33	7	16	.304	33	6.65	124	0	0	0	196.1	251	145	48	68	2	0	3	895	3	5.68	3.12	1.82	2.20	13.9	7.6	1.62	.311	6.97	138	6.11	129	11.51	-29.2
14	Tim Wakefield T. Wakefield	151	1996	BOS	32	14	13	.519	32	5.14	140	6	0	0	211.2	238	121	38	90	12	0	0	963	4	5.95	3.83	1.56	1.62	14.5	9.3	1.55	.293	6.42	101	5.62	116	10.12	-18.1
15	Murry Dickson M. Dickson	151	1951	PIT	45	20	16	.556	35	4.02	112	19	3	2	288.2	294	129	32	101	6	9		1,241	1	3.49	3.15	1.11	1.00	9.0	8.1	1.37	.265	4.71	97	4.26	100	9.17	0.9
16	Darryl Kile D. Kile	150	1999	COL	32	8	13	.381	32	6.61	116	1	0	0	190.2	225	140	33	109	6	0	5	888	13	5.48	5.15	1.06	1.56	13.1	12.3	1.75	.308	7.08	119	5.97	117	10.62	-16.2
17	Dick Tidrow D. Tidrow	150	1973	CLE	42	14	16	.467	40	4.42	138	13	2	0	274.2	289	135	31	95	8	2	10	1,194	6	4.52	3.11	1.45	1.02	11.6	8.0	1.40	.280	4.92	114	4.15	107	9.47	-7.8
18	Dick Ellsworth D. Ellsworth	150	1966	CHC	38	8	22	.267	37	3.98	144	9	0	0	269.1	321	119	28	51	5	0	5	1,169	5	4.81	1.70	2.82	0.94	12.3	4.4	1.38	.311	5.01	105	3.46	94	10.73	6.4
19	Johnny Sain J. Sain	150	1949	BSN	37	10	17	.370	36	4.81	73	16	1	0	243.0	285	130	15	75	4	1		1,072	1	2.70	2.78	0.97	0.56	6.8	7.0	1.48	.298	5.56	125	3.69	97	10.56	3
20	Wilbur Wood W. Wood	148	1975	CWS	43	16	20	.444	43	4.11	140	14	2	0	291.1	309	133	26	92	5	0	5	1,245	6	4.32	2.84	1.52	0.80	11.2	7.4	1.38	.288	4.57	107	3.77	100	9.55	-0.3
21	Brian Bohanon B. Bohanon	146	1999	COL	33	12	12	.500	33	6.20	120	3	1	0	197.1	236	136	30	92	14	0	1	903	6	5.47	4.20	1.30	1.37	13.3	10.2	1.66	.318	6.66	111	5.49	108	10.76	-7.4
22	Jim Bibby J. Bibby	146	1974	TEX	41	19	19	.500	41	4.74	149	11	5	0	264.0	255	139	25	113	9	0	4	1,134	11	5.08	3.85	1.32	0.85	13.1	10.0	1.39	.274	4.98	132	4.06	114	8.69	-15.5
23	Steve Carlton S. Carlton	146	1973	PHI	40	13	20	.394	40	3.90	223	18	3	0	293.1	293	127	29	113	3	0	12	1,262	7	6.84	3.47	1.97	0.89	17.7	9.0	1.38	.295	4.48	103	3.51	93	8.99	9.3
24	Mike Moore M. Moore	145	1987	SEA	33	9	19	.321	33	4.71	115	12	0	0	231.0	268	121	29	84	0	0	3	1,020	4	4.48	3.27	1.37	1.13	11.3	8.2	1.52	.302	5.65	103	4.59	98	10.44	2.9
25	Jack Morris J. Morris	144	1990	DET	36	15	18	.455	36	4.51	162	11	3	0	249.2	231	125	26	97	6	0	13	1,073	16	5.84	3.50	1.67	0.94	15.1	9.0	1.31	.262	5.19	115	4.09	102	8.33	-1.5