most runs allowed by a player in a season since 1980

Since 1980, Pedro Astacio has allowed the most runs in a season, with 160 runs in 1998.

	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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	Matt Keough M. Keough	144	1982	OAK	34	11	18	.379	34	5.72	75	10	2	0	209.1	233	133	38	101	5	0	1	946	10	3.22	4.34	0.74	1.63	7.9	10.7	1.60	.268	6.19	148	5.87	145	10.02	-42.6
11	Livan Hernandez L. Hernandez	143	2001	SFG	34	13	15	.464	34	5.24	138	2	0	0	226.2	266	132	24	85	3	0	7	1,008	7	5.48	3.38	1.62	0.95	13.7	8.4	1.55	.319	5.68	125	4.37	104	10.56	-5.5
12	Jamey Wright J. Wright	143	1998	COL	34	9	14	.391	34	5.67	86	1	0	0	206.1	235	130	24	95	11	0	3	919	6	3.75	4.14	0.91	1.05	9.4	10.3	1.60	.300	6.24	108	5.35	112	10.25	-11
13	Tom Gordon T. Gordon	143	1996	BOS	34	12	9	.571	34	5.59	171	4	1	0	215.2	249	134	28	105	4	0	5	998	6	7.14	4.38	1.63	1.17	17.1	10.5	1.64	.320	5.97	110	4.78	98	10.39	1.9
14	Erik Hanson E. Hanson	143	1996	TOR	35	13	17	.433	35	5.41	156	4	1	0	214.2	243	129	26	102	2	0	2	955	13	6.54	4.28	1.53	1.09	16.3	10.7	1.61	.324	6.00	109	4.74	96	10.19	4.2
15	Mark Langston M. Langston	142	1986	SEA	37	12	14	.462	36	4.85	245	9	0	0	239.1	234	129	30	123	4	1	1	1,057	10	9.21	4.63	1.99	1.13	23.2	11.6	1.49	.311	5.34	113	3.93	90	8.80	11.4
16	Eric Milton E. Milton	141	2005	CIN	34	8	15	.348	34	6.47	123	0	0	0	186.1	237	134	40	52	7	0	2	855	8	5.94	2.51	2.37	1.93	14.4	6.1	1.55	.311	6.81	152	5.43	124	11.45	-21
17	Tanyon Sturtze T. Sturtze	141	2002	TBD	33	4	18	.182	33	5.18	137	4	0	0	224.0	271	129	33	89	9	0	2	1,008	7	5.50	3.58	1.54	1.33	13.6	8.8	1.61	.322	5.67	117	4.96	114	10.89	-14.9
18	Darryl Kile D. Kile	141	1998	COL	36	13	17	.433	35	5.20	158	4	1	0	230.1	257	133	28	96	7	1	4	1,020	12	6.17	3.75	1.65	1.09	15.5	9.4	1.53	.313	5.51	99	4.68	98	10.04	3.2
19	Mike Moore M. Moore	141	1986	SEA	38	11	13	.458	37	4.30	146	11	1	1	266.0	279	127	28	94	12	1	6	1,145	4	4.94	3.18	1.55	0.95	12.8	8.2	1.40	.290	4.77	100	4.23	97	9.44	4.5
20	Frank Viola F. Viola	141	1983	MIN	35	7	15	.318	34	5.49	127	4	0	0	210.0	242	128	34	92	8	0	7	949	6	5.44	3.94	1.38	1.46	13.4	9.7	1.59	.302	6.04	129	5.07	127	10.37	-25
21	Jose Lima J. Lima	140	2005	KCR	32	5	16	.238	32	6.99	80	1	0	0	168.2	219	131	31	61	9	0	1	780	5	4.27	3.25	1.31	1.65	10.3	7.8	1.66	.314	7.47	156	5.70	132	11.69	-25.8
22	Pedro Astacio P. Astacio	140	1999	COL	34	17	11	.607	34	5.04	210	7	0	0	232.0	258	130	38	75	11	0	6	1,008	5	8.15	2.91	2.80	1.47	20.8	7.4	1.44	.326	5.43	91	4.55	90	10.01	13.3
23	Charles Nagy C. Nagy	139	1998	CLE	33	15	10	.600	33	5.22	120	2	0	0	210.1	250	122	34	66	9	0	12	930	3	5.13	2.82	1.82	1.45	12.9	7.1	1.50	.308	5.95	110	5.16	113	10.70	-13.9
24	Rick Mahler R. Mahler	139	1986	ATL	39	14	18	.438	39	4.88	137	7	1	0	237.2	283	129	25	95	3	0	10	1,056	5	5.19	3.60	1.44	0.95	13.0	9.0	1.59	.324	5.26	123	4.21	108	10.72	-7.7
25	Derek Lowe D. Lowe	138	2004	BOS	33	14	12	.538	33	5.42	105	0	0	0	182.2	224	110	15	71	8	0	2	839	3	5.17	3.50	1.48	0.74	12.5	8.5	1.61	.327	6.80	115	4.26	97	11.04	2.4