Between the 1980 and 1989 seasons, Jack Morris gave up the most runs, with 1,085 runs.

Interpreted as:

most runs allowed by a player in the 1980s

	NAME	R	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	Jack Morris J. Morris	1,085	332	162	119	.577	332	3.66	1,629	133	20	0	2443.2	2,212	995	264	858	23	0	66	10,208	124	6.00	3.16	1.90	0.97	16.0	8.4	1.26	.262	4.00	92	3.89	94	8.15	66.7
2	Jim Clancy J. Clancy	1,017	329	119	126	.486	317	4.09	1,145	61	10	1	2017.2	1,996	918	207	711	27	8	30	8,582	72	5.11	3.17	1.61	0.92	13.3	8.3	1.34	.276	4.54	100	4.04	100	8.90	1.9
3	Charlie Hough C. Hough	999	331	128	114	.529	282	3.67	1,363	93	11	2	2121.2	1,842	864	218	867	80	22	18	8,942	98	5.78	3.68	1.57	0.92	15.2	9.7	1.28	.253	4.24	90	4.14	103	7.81	-28.2
4	Frank Tanana F. Tanana	989	314	107	122	.467	304	3.89	1,225	51	8	0	1994.0	2,014	861	219	589	55	3	59	8,493	55	5.53	2.66	2.08	0.99	14.4	6.9	1.31	.280	4.46	97	3.91	97	9.09	27
5	Dave Stieb D. Stieb	954	339	140	109	.562	331	3.32	1,380	92	27	1	2328.2	2,019	859	183	825	104	4	29	9,654	39	5.33	3.19	1.67	0.71	14.3	8.5	1.22	.256	3.69	80	3.77	93	7.80	77.5
6	Bob Knepper B. Knepper	946	332	105	118	.471	306	3.70	1,068	50	20	1	2005.1	2,045	824	167	597	36	8	52	8,484	39	4.79	2.68	1.79	0.75	12.6	7.0	1.32	.284	4.25	107	3.70	107	9.18	-64.6
7	Doyle Alexander D. Alexander	930	300	112	98	.533	289	3.85	1,029	51	10	0	2004.1	2,065	858	223	503	32	7	28	8,423	34	4.62	2.26	2.05	1.00	12.2	6.0	1.28	.278	4.18	97	3.96	100	9.27	3.7
8	Floyd Bannister F. Bannister	929	297	112	109	.507	294	3.98	1,356	50	11	0	1890.2	1,813	836	234	616	28	0	23	7,994	66	6.45	2.93	2.20	1.11	17.0	7.7	1.28	.274	4.42	96	3.94	96	8.63	35.4
9	Richard Dotson R. Dotson	922	292	109	109	.500	283	4.16	951	54	10	0	1804.1	1,813	835	191	720	40	6	23	7,788	42	4.74	3.59	1.32	0.95	12.2	9.2	1.40	.276	4.60	102	4.33	108	9.04	-62.1
10	Bert Blyleven B. Blyleven	919	291	123	103	.544	288	3.64	1,480	94	21	0	2078.1	1,984	841	212	557	73	1	26	8,623	44	6.41	2.41	2.66	0.92	17.2	6.5	1.22	.281	3.98	89	3.56	88	8.59	109.6
11	Mike Witt M. Witt	917	304	109	104	.512	272	3.78	1,269	70	10	5	1945.0	1,913	816	166	643	47	18	36	8,220	64	5.87	2.98	1.97	0.77	15.4	7.8	1.31	.287	4.24	95	3.61	88	8.85	109.1
12	Frank Viola F. Viola	877	272	117	98	.544	271	3.84	1,287	56	11	0	1858.0	1,850	792	218	548	30	0	20	7,801	48	6.23	2.65	2.35	1.06	16.5	7.0	1.29	.285	4.25	91	3.83	94	8.96	46.2
13	Fernando Valenzuela F. Valenzuela	869	298	128	103	.554	287	3.19	1,644	102	27	2	2144.2	1,876	760	133	838	16	5	54	8,957	81	6.90	3.52	1.96	0.56	18.4	9.4	1.27	.276	3.65	91	3.21	90	7.87	84
14	Rick Sutcliffe R. Sutcliffe	866	310	116	93	.555	260	3.87	1,285	59	15	6	1860.0	1,764	799	160	745	28	27	56	7,887	74	6.22	3.60	1.72	0.77	16.3	9.4	1.35	.283	4.19	99	3.74	96	8.54	34.8
15	Mike Moore M. Moore	865	262	85	107	.443	252	4.13	1,109	62	12	2	1698.2	1,691	779	160	618	31	6	32	7,219	59	5.88	3.27	1.79	0.85	15.4	8.6	1.36	.289	4.58	99	3.82	90	8.96	74.3
16	Rick Rhoden R. Rhoden	856	294	109	100	.522	288	3.65	1,092	48	10	1	1918.1	1,954	779	139	596	32	4	57	8,082	63	5.12	2.80	1.83	0.65	13.5	7.4	1.33	.292	4.02	98	3.52	94	9.17	46.3
17	Rick Mahler R. Mahler	852	319	87	101	.463	247	3.93	845	41	8	2	1728.2	1,837	754	141	528	30	16	63	7,350	36	4.40	2.75	1.60	0.73	11.5	7.2	1.37	.292	4.44	102	3.79	99	9.56	7.5
18	Dennis Martinez D. Martinez	848	302	107	87	.552	255	4.00	868	47	11	1	1722.0	1,784	765	190	512	49	19	27	7,316	43	4.54	2.68	1.70	0.99	11.9	7.0	1.33	.280	4.43	104	4.14	107	9.32	-54.1
19	Mike Flanagan M. Flanagan	846	278	103	94	.523	276	4.01	845	49	10	0	1740.0	1,801	776	170	568	25	1	25	7,400	57	4.37	2.94	1.49	0.88	11.4	7.7	1.36	.282	4.38	101	4.06	101	9.32	-6.1
20	Nolan Ryan N. Ryan	835	314	122	104	.540	314	3.14	2,167	44	15	0	2094.0	1,603	730	128	894	53	0	34	8,704	123	9.31	3.84	2.42	0.55	24.9	10.3	1.19	.270	3.59	90	2.82	81	6.89	159.5
21	Dan Petry D. Petry	832	283	107	87	.552	256	3.84	908	49	11	0	1731.1	1,630	739	179	697	40	8	56	7,350	62	4.72	3.62	1.30	0.93	12.4	9.5	1.34	.263	4.32	96	4.30	104	8.47	-30.4
22	Bruce Hurst B. Hurst	831	270	103	84	.551	250	4.01	1,222	64	15	0	1703.2	1,783	759	189	545	24	5	31	7,254	38	6.46	2.88	2.24	1.00	16.8	7.5	1.37	.302	4.39	96	3.76	94	9.42	41.4
23	Mike Krukow M. Krukow	823	278	98	91	.519	274	3.81	1,171	37	8	1	1711.1	1,690	724	156	570	36	1	60	7,302	59	6.16	3.00	2.05	0.82	16.0	7.8	1.32	.286	4.33	105	3.62	99	8.89	8.6
24	Bob Welch B. Welch	821	313	137	93	.596	311	3.21	1,457	47	22	0	2082.1	1,885	743	155	666	49	0	40	8,655	43	6.30	2.88	2.19	0.67	16.8	7.7	1.23	.273	3.55	90	3.34	92	8.15	63.4
25	Shane Rawley S. Rawley	820	369	102	100	.505	225	4.02	877	41	7	25	1675.2	1,732	749	144	643	22	87	56	7,215	45	4.71	3.45	1.36	0.77	12.2	8.9	1.42	.287	4.40	104	4.01	105	9.30	-31.7