which reliever most homers in one season ever

John Wyatt has given up the most home runs by a relief pitcher in a season, with 23 HR in 1964.

	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	H/9
1	John Wyatt J. Wyatt	23	1964	KCA	81	9	8	.529	0	3.59	74	0	0	20	128.0	111	51	53	53	1	57	5	540	4	5.20	3.73	1.40	1.62	13.7	9.8	1.28	.226	3.73	7.80
2	Bill Henry B. Henry	19	1959	CHC	65	9	8	.529	0	2.68	115	0	0	12	134.1	111	40	42	26	1	36	3	526	3	7.70	1.74	4.42	1.27	21.9	4.9	1.02	.252	2.81	7.44
3	Tommy Milone T. Milone	18	2019	SEA	17	3	7	.300	0	4.80	60	0	0	0	80.2	72	43	44	15	2	0	1	324	1	6.69	1.67	4.00	2.01	18.5	4.6	1.08	.236	4.91	8.03
4	Sam Gaviglio S. Gaviglio	18	2019	TOR	52	4	2	.667	0	4.61	88	0	0	0	95.2	85	49	51	22	4	9	0	392	0	8.28	2.07	4.00	1.69	22.4	5.6	1.12	.258	4.80	8.00
5	Gabe White G. White	18	2001	COL	69	1	7	.125	0	6.25	47	0	0	0	67.2	70	47	47	26	1	16	5	290	1	6.25	3.46	1.81	2.39	16.2	9.0	1.42	.263	6.25	9.31
6	Steve Ridzik S. Ridzik	18	1965	WSH	63	6	4	.600	0	4.02	72	0	0	8	109.2	108	49	61	43	7	25	4	480	3	5.91	3.53	1.67	1.48	15.0	9.0	1.38	.265	5.01	8.86
7	Mike Fornieles M. Fornieles	18	1961	BOS	55	8	7	.533	0	4.71	65	0	0	15	105.0	102	55	58	50	2	42	7	462	4	5.57	4.29	1.30	1.54	14.1	10.8	1.45	.257	4.97	8.74
8	Enyel De Los Santos E. De Los Santos	17	2024	TOT	64	1	2	.333	0	5.20	66	0	0	2	64.0	65	37	38	25	5	20	1	278	2	9.28	3.52	2.64	2.39	23.7	9.0	1.41	.291	5.34	9.14
9	Brett Oberholtzer B. Oberholtzer	17	2016	TOT	35	3	2	.600	0	5.43	49	0	0	1	66.1	79	40	41	24	1	14	1	299	1	6.65	3.26	2.04	2.31	16.4	8.0	1.55	.298	5.56	10.72
10	Carlos Villanueva C. Villanueva	17	2016	SDP	51	2	2	.500	0	5.96	61	0	0	1	74.0	89	49	50	14	3	11	4	321	2	7.42	1.70	4.36	2.07	19.0	4.4	1.39	.319	6.08	10.82
11	Doug Jones D. Jones	17	1998	TOT	69	4	6	.400	0	4.54	71	0	0	13	85.1	99	43	44	17	4	42	4	372	0	7.49	1.79	4.18	1.79	19.1	4.6	1.36	.312	4.64	10.44
12	Doug Bochtler D. Bochtler	17	1998	DET	51	0	2	.000	0	6.15	45	0	0	0	67.1	73	46	48	42	3	11	6	312	6	6.01	5.61	1.07	2.27	14.4	13.5	1.71	.273	6.42	9.76
13	Joe Boever J. Boever	17	1995	DET	60	5	7	.417	0	6.39	71	0	0	3	98.2	128	70	74	44	3	27	12	463	1	6.48	4.01	1.61	1.55	15.3	9.5	1.74	.338	6.75	11.68
14	Keith Atherton K. Atherton	17	1985	OAK	56	4	7	.364	0	4.30	77	0	0	3	104.2	89	50	51	42	0	21	9	435	2	6.62	3.61	1.83	1.46	17.7	9.7	1.25	.241	4.39	7.65
15	Oscar Zamora O. Zamora	17	1975	CHC	52	5	2	.714	0	5.07	28	0	0	10	71.0	84	40	42	15	0	31	5	307	1	3.55	1.90	1.87	2.15	9.1	4.9	1.39	.271	5.32	10.65
16	Don Elston D. Elston	17	1960	CHC	60	8	9	.471	0	3.38	86	0	0	10	128.0	108	48	57	55	4	33	8	548	1	6.05	3.87	1.56	1.20	15.7	10.0	1.27	.236	4.01	7.59
17	Jackson Rutledge J. Rutledge	16	2025	WSH	63	4	2	.667	0	5.77	65	0	0	0	73.1	87	47	49	24	7	17	0	330	6	7.98	2.95	2.71	1.96	19.7	7.3	1.51	.326	6.01	10.68
18	Emilio Pagán E. Pagán	16	2021	SDP	67	4	3	.571	0	4.83	69	0	0	0	63.1	56	34	35	18	2	10	0	263	0	9.81	2.56	3.83	2.27	26.2	6.8	1.17	.253	4.97	7.96
19	Wade LeBlanc W. LeBlanc	16	2019	SEA	18	4	3	.571	0	4.57	62	0	0	0	84.2	86	43	44	22	1	4	1	354	0	6.59	2.34	2.82	1.70	17.5	6.2	1.28	.277	4.68	9.14
20	Nestor Cortes N. Cortes	16	2019	NYY	32	5	1	.833	0	5.60	67	0	0	0	64.1	69	40	40	27	1	7	1	285	1	9.37	3.78	2.48	2.24	23.5	9.5	1.49	.305	5.60	9.65
21	Chris Beck C. Beck	16	2017	CWS	57	2	1	.667	0	6.40	42	0	0	0	64.2	73	46	48	34	4	12	3	294	1	5.85	4.73	1.24	2.23	14.3	11.6	1.65	.288	6.68	10.16
22	Chad Gaudin C. Gaudin	16	2010	TOT	42	1	4	.200	0	5.65	53	0	0	0	65.1	73	41	45	25	8	23	0	295	3	7.30	3.44	2.12	2.20	18.0	8.5	1.50	.295	6.20	10.06
23	Ambiorix Burgos A. Burgos	16	2006	KCR	67	4	5	.444	0	5.60	70	0	0	18	70.2	77	44	45	36	6	41	4	320	9	8.92	4.58	1.94	2.04	21.9	11.3	1.60	.318	5.73	9.81
24	Luis Vizcaino L. Vizcaino	16	2003	MIL	75	4	3	.571	0	6.39	61	0	0	0	62.0	64	44	45	25	1	21	3	272	3	8.85	3.63	2.44	2.32	22.4	9.2	1.44	.284	6.53	9.29
25	Jose Bautista J. Bautista	16	1995	SFG	46	2	5	.286	0	6.96	33	0	0	0	64.2	84	50	51	17	2	19	2	295	0	4.59	2.37	1.94	2.23	11.2	5.8	1.56	.300	7.10	11.69

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StatMuse has game-level data for home runs allowed going back to the 1901 season.

Some of the information used here was obtained free of charge from Retrosheet.

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TEAM	W	L	PCT	GB
Mariners	90	72	.556
Astros	87	75	.537	3.0
Rangers	81	81	.500	9.0
Athletics	76	86	.469	14.0
Angels	72	90	.444	18.0

Schedule

DATE	MATCHUP			TIME (ET)
Fri 3/27	ATH	@	TOR	7:07 PM
Sat 3/28	ATH	@	TOR	3:07 PM
Sun 3/29	ATH	@	TOR	1:37 PM
Mon 3/30	ATH	@	ATL	7:15 PM
Tue 3/31	ATH	@	ATL	7:15 PM

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MLB 2025 Standings

NL East	W	L	PCT	GB
Phillies - y	96	66	.593
Mets	83	79	.512	13.0
Marlins	79	83	.488	17.0
Braves	76	86	.469	20.0
Nationals	66	96	.407	30.0
NL Central	W	L	PCT	GB
Brewers - y	97	65	.599
Cubs - w	92	70	.568	5.0
Reds - w	83	79	.512	14.0
Cardinals	78	84	.481	19.0
Pirates	71	91	.438	26.0
NL West	W	L	PCT	GB
Dodgers - y	93	69	.574
Padres - w	90	72	.556	3.0
Giants	81	81	.500	12.0
Diamondbacks	80	82	.494	13.0
Rockies	43	119	.265	50.0

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Blue Jays - y	94	68	.580
Yankees - w	94	68	.580
Red Sox - w	89	73	.549	5.0
Rays	77	85	.475	17.0
Orioles	75	87	.463	19.0
AL Central	W	L	PCT	GB
Guardians - y	88	74	.543
Tigers - w	87	75	.537	1.0
Royals	82	80	.506	6.0
Twins	70	92	.432	18.0
White Sox	60	102	.370	28.0
AL West	W	L	PCT	GB
Mariners - y	90	72	.556
Astros	87	75	.537	3.0
Rangers	81	81	.500	9.0
Athletics	76	86	.469	14.0
Angels	72	90	.444	18.0

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Tue 9/16	CIN	@	STL	6-2
Tue 9/16	ATL	@	WSH	9-4
Tue 9/16	ATH	@	BOS	4-5
Tue 9/16	TOR	@	TBR	1-2
Tue 9/16	SEA	@	KCR	5-7

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DATE	MATCHUP			TIME (ET)
Wed 3/25	NYY	@	SFG	8:05 PM
Thu 3/26	PIT	@	NYM	1:15 PM
Thu 3/26	CWS	@	MIL	2:10 PM
Thu 3/26	WSH	@	CHC	2:20 PM
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John Wyatt has given up the most home runs by a relief pitcher in a season, with 23 HR in 1964.

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