Bert Blyleven has allowed the most home runs in the AL in a season, with 50 HR in 1986.

	NAME	HR	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	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	Bert Blyleven B. Blyleven	50	1986	MIN	36	17	14	.548	36	4.01	215	16	3	0	271.2	262	121	134	58	10	0	4	1,126	4	7.12	1.92	3.71	1.66	19.1	5.2	1.18	.267	4.44	93	4.32	104	8.68	-5
2	Bert Blyleven B. Blyleven	46	1987	MIN	37	15	12	.556	37	4.01	196	8	1	0	267.0	249	119	132	101	9	0	4	1,122	13	6.61	3.40	1.94	1.55	17.5	9.0	1.31	.264	4.45	87	4.87	109	8.39	-12.1
3	Jamie Moyer J. Moyer	44	2004	SEA	34	7	13	.350	33	5.21	125	1	0	0	202.0	217	117	127	63	11	1	3	888	1	5.57	2.81	1.98	1.96	14.1	7.1	1.39	.268	5.66	117	5.73	129	9.67	-30.1
4	Pedro Ramos P. Ramos	43	1957	WSH	43	12	16	.429	30	4.79	91	7	1	0	231.0	251	123	131	69	7	5	4	1,011	2	3.55	2.69	1.32	1.68	9.0	6.8	1.39	.260	5.10	127	5.08	132	9.78	-31.6
5	Denny McLain D. McLain	42	1966	DET	38	20	14	.588	38	3.92	192	14	4	0	264.1	205	115	120	104	3	0	3	1,080	6	6.54	3.54	1.85	1.43	17.8	9.6	1.17	.221	4.09	113	4.38	122	6.98	-22.9
6	Lucas Giolito L. Giolito	41	2023	TOT	33	7	15	.318	33	4.88	204	0	0	0	184.1	169	100	110	73	9	0	2	794	5	9.96	3.56	2.79	2.00	25.7	9.2	1.31	.274	5.37	113	5.26	120	8.25	-17.8
7	Dylan Bundy D. Bundy	41	2018	BAL	31	8	16	.333	31	5.45	184	1	0	0	171.2	188	104	116	54	6	0	1	750	6	9.65	2.83	3.41	2.15	24.5	7.2	1.41	.316	6.08	128	5.16	117	9.86	-13.8
8	Rick Helling R. Helling	41	1999	TEX	35	13	11	.542	35	4.84	131	3	0	0	219.1	228	118	127	85	6	0	5	943	8	5.38	3.49	1.54	1.68	13.9	9.0	1.43	.275	5.21	97	5.60	115	9.36	-16.9
9	Ramon Ortiz R. Ortiz	40	2002	ANA	32	15	9	.625	32	3.77	162	4	1	0	217.1	188	91	97	68	5	0	0	896	7	6.71	2.82	2.38	1.66	18.1	7.6	1.18	.238	4.02	85	4.86	112	7.79	-12.1
10	Shawn Boskie S. Boskie	40	1996	CAL	37	12	11	.522	28	5.32	133	1	0	0	189.1	226	112	126	67	13	1	7	860	10	6.32	3.18	1.99	1.90	15.5	7.8	1.55	.306	5.99	107	5.77	116	10.74	-16.8
11	Brad Radke B. Radke	40	1996	MIN	35	11	16	.407	35	4.46	148	3	0	0	232.0	231	115	125	57	4	0	2	973	1	5.74	2.21	2.60	1.55	15.2	5.9	1.24	.264	4.85	89	4.92	100	8.96	-0.1
12	Jack Morris J. Morris	40	1986	DET	35	21	8	.724	35	3.27	223	15	6	0	267.0	229	97	105	82	0	0	7	1,092	12	7.52	2.76	2.72	1.35	20.4	7.5	1.16	.253	3.54	81	3.96	94	7.72	7.1
13	Fergie Jenkins F. Jenkins	40	1979	TEX	37	16	14	.533	37	4.07	164	10	3	0	259.0	252	117	127	81	3	0	6	1,089	4	5.70	2.81	2.02	1.39	15.1	7.4	1.29	.265	4.41	98	4.43	109	8.76	-11.6
14	Orlando Pena O. Pena	40	1964	KCA	40	12	14	.462	32	4.43	184	5	0	0	219.1	231	108	126	73	8	3	2	955	6	7.55	3.00	2.52	1.64	19.3	7.6	1.39	.294	5.17	119	4.41	113	9.48	-12
15	Ralph Terry R. Terry	40	1962	NYY	43	23	12	.657	39	3.19	176	14	3	2	298.2	257	106	123	57	3	2	1	1,191	2	5.30	1.72	3.09	1.21	14.8	4.8	1.05	.237	3.71	84	3.78	97	7.74	3.7
16	Jordan Lyles J. Lyles	39	2023	KCR	31	6	17	.261	31	6.28	120	3	0	0	177.2	176	124	130	45	6	0	0	748	10	6.08	2.28	2.67	1.98	16.0	6.0	1.24	.255	6.59	140	5.62	131	8.92	-26.3
17	Matthew Boyd M. Boyd	39	2019	DET	32	9	12	.429	32	4.56	238	0	0	0	185.1	178	94	101	50	8	0	1	788	6	11.56	2.43	4.76	1.89	30.2	6.3	1.23	.307	4.90	99	4.31	94	8.64	5.3
18	Ervin Santana E. Santana	39	2012	LAA	30	9	13	.409	30	5.16	133	1	1	0	178.0	165	102	109	61	9	0	2	764	4	6.72	3.08	2.18	1.97	17.4	8.0	1.27	.241	5.51	133	5.62	142	8.34	-34.4
19	Jack Morris J. Morris	39	1987	DET	34	18	11	.621	34	3.38	208	13	0	0	266.0	227	100	111	93	1	0	7	1,101	24	7.04	3.15	2.24	1.32	18.9	8.4	1.20	.247	3.76	77	4.26	94	7.68	8.5
20	Catfish Hunter C. Hunter	39	1973	OAK	36	21	5	.808	36	3.34	124	11	3	0	256.1	222	95	105	69	1	0	1	1,040	2	4.35	2.42	1.80	1.37	11.9	6.6	1.14	.227	3.69	93	4.39	123	7.79	-25.6
21	Jim Perry J. Perry	39	1971	MIN	40	17	17	.500	39	4.23	126	8	0	1	270.0	263	127	135	102	5	1	10	1,146	5	4.20	3.40	1.24	1.30	11.0	8.9	1.35	.256	4.50	120	4.58	126	8.77	-27.8
22	Pedro Ramos P. Ramos	39	1961	MIN	42	11	20	.355	34	3.95	174	9	3	2	264.1	265	116	134	79	4	6	6	1,123	5	5.92	2.69	2.20	1.33	15.5	7.0	1.30	.273	4.56	96	4.12	99	9.02	2
23	Jordan Lyles J. Lyles	38	2021	TEX	32	10	13	.435	30	5.15	146	0	0	0	180.0	194	103	104	56	7	1	0	769	9	7.30	2.80	2.61	1.90	19.0	7.3	1.39	.299	5.20	117	5.33	121	9.70	-17.8
24	Rick Porcello R. Porcello	38	2017	BOS	33	11	17	.393	33	4.65	181	2	0	0	203.1	236	105	125	48	6	0	1	885	5	8.01	2.12	3.77	1.68	20.5	5.4	1.40	.324	5.53	101	4.60	106	10.45	-5.9
25	Carlos Silva C. Silva	38	2006	MIN	36	11	15	.423	31	5.94	70	0	0	0	180.1	246	119	130	32	7	2	4	811	1	3.49	1.60	2.19	1.90	8.6	3.9	1.54	.313	6.49	133	5.75	131	12.28	-28.6