most home runs by a team in the first inning in one game

12 teams are tied for the most home runs in a game in the 1st inning, with 4 homers. The first three are the New York Yankees on April 29 and on March 29, the Los Angeles Dodgers on September 11 and the St. Louis Cardinals on July 2, 2022.

Interpreted as:

most home runs by a team in the first inning in one regular-season game

	TEAM	HR	DATE	TM		OPP	AB	H	2B	3B	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Yankees	4	4/29/2025	NYY	@	BAL	10	7	2	0	5	0	0	0	10	21	6	0	0	0	.700	.700	2.100	2.800
2	Yankees	4	3/29/2025	NYY	vs	MIL	7	4	0	0	4	2	0	2	9	16	4	0	0	0	.571	.667	2.286	2.952
3	Dodgers	4	9/11/2024	LAD	vs	CHC	9	6	0	0	5	0	0	1	9	18	4	0	0	0	.667	.667	2.000	2.667
4	Cardinals	4	7/2/2022	STL	@	PHI	8	5	0	0	5	0	0	0	8	17	4	0	0	0	.625	.625	2.125	2.750
5	Braves	4	4/18/2021	ATL	@	CHC	7	4	0	0	6	1	1	0	9	16	4	0	0	0	.571	.667	2.286	2.952
6	Tigers	4	8/8/2020	DET	@	PIT	9	6	0	0	5	1	0	0	10	18	4	0	0	0	.667	.700	2.000	2.700
7	Royals	4	5/8/2018	KCR	@	BAL	11	9	0	0	10	2	0	0	14	21	4	0	1	0	.818	.786	1.909	2.695
8	Orioles	4	8/19/2016	BAL	vs	HOU	10	7	0	0	5	0	0	0	10	19	4	0	0	0	.700	.700	1.900	2.600
9	Astros	4	9/8/2004	HOU	vs	CIN	8	5	0	0	5	1	0	1	9	17	4	0	0	0	.625	.667	2.125	2.792
10	Braves	4	5/28/2003	ATL	vs	CIN	7	4	0	0	5	1	0	1	8	16	4	0	0	0	.571	.625	2.286	2.911
11	Mariners	4	5/2/2002	SEA	@	CWS	11	8	1	0	10	0	1	0	13	21	5	0	1	0	.727	.692	1.909	2.601
12	Cubs	4	4/27/2000	CHC	@	HOU	8	5	0	0	5	0	0	1	8	17	4	0	0	0	.625	.625	2.125	2.750
13	Reds	4	6/19/1994	CIN	@	ATL	11	8	0	0	7	0	0	0	11	20	4	0	0	0	.727	.727	1.818	2.545
14	Red Sox	4	6/17/1977	BOS	vs	NYY	7	4	0	0	4	0	0	1	7	16	4	0	0	0	.571	.571	2.286	2.857
15	Tigers	4	7/29/1974	DET	@	CLE	9	6	1	0	6	0	0	0	9	19	5	0	0	0	.667	.667	2.111	2.778
16	Angels	3	6/2/2025	LAA	@	BOS	8	4	0	0	6	1	0	0	9	13	3	0	0	0	.500	.556	1.625	2.181
17	Dodgers	3	8/31/2024	LAD	@	ARI	6	4	0	0	3	0	0	0	6	13	3	0	0	0	.667	.667	2.167	2.833
18	Diamondbacks	3	8/2/2024	ARI	@	PIT	8	5	0	1	4	1	0	1	9	16	4	0	0	0	.625	.667	2.000	2.667
19	Mariners	3	7/26/2024	SEA	@	CWS	9	6	2	0	8	2	0	1	11	17	5	0	0	0	.667	.727	1.889	2.616
20	Cubs	3	9/30/2023	CHC	@	MIL	6	3	0	0	6	3	0	2	9	12	3	0	0	0	.500	.667	2.000	2.667
21	Astros	3	8/16/2023	HOU	@	MIA	7	5	1	0	5	1	0	0	8	15	4	0	0	0	.714	.750	2.143	2.893
22	Braves	3	6/27/2023	ATL	vs	MIN	7	4	0	1	4	0	0	3	7	15	4	0	0	0	.571	.571	2.143	2.714
23	Twins	3	4/13/2023	MIN	@	NYY	10	8	3	0	9	2	0	0	13	20	6	0	1	0	.800	.769	2.000	2.769
24	Red Sox	3	4/3/2023	BOS	vs	PIT	7	3	0	0	5	1	0	1	8	12	3	0	0	0	.429	.500	1.714	2.214
25	Cardinals	3	4/2/2023	STL	vs	TOR	7	5	0	0	4	0	0	0	7	14	3	0	0	0	.714	.714	2.000	2.714