team most runs in a game in the first inning including playoffs

The Cincinnati Reds have put up the most runs by a team in the 1st inning in a regular-season or postseason game, with 14 runs versus the Astros on August 3, 1989.

	TEAM	R	DATE	TM		OPP	AB	H	2B	3B	HR	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Reds	14	8/3/1989	CIN	vs	HOU	19	16	3	0	1	13	1	0	0	20	22	4	0	0	0	.842	.850	1.158	2.008
2	Red Sox	13	6/27/2003	BOS	vs	FLA	14	13	4	1	1	14	4	0	0	19	22	6	0	1	0	.929	.895	1.571	2.466
3	Athletics	13	7/5/1996	OAK	vs	CAL	12	9	2	0	1	13	5	1	2	18	14	3	0	0	0	.750	.833	1.167	2.000
4	Padres	13	8/24/1993	SDP	vs	STL	12	9	3	0	2	13	4	0	0	16	18	5	0	0	0	.750	.813	1.500	2.313
5	Phillies	12	4/8/2017	PHI	vs	WSH	10	9	3	1	0	12	4	0	1	16	14	4	0	2	0	.900	.813	1.400	2.213
6	Yankees	12	7/30/2011	NYY	vs	BAL	14	10	2	0	1	12	2	0	2	16	15	3	0	0	0	.714	.750	1.071	1.821
7	Dodgers	11	6/2/2021	LAD	vs	STL	10	7	1	0	1	10	4	0	1	14	11	2	0	0	0	.700	.786	1.100	1.886
8	Dodgers	11	10/14/2020	LAD	@	ATL	10	7	2	0	3	11	3	1	1	14	18	5	0	0	0	.700	.786	1.800	2.586
9	Padres	11	7/29/2007	SDP	@	HOU	10	8	2	0	2	11	4	0	0	15	16	4	0	1	0	.800	.800	1.600	2.400
10	Indians	11	8/13/2006	CLE	vs	KCR	12	8	2	0	1	11	3	0	1	15	13	3	0	0	0	.667	.733	1.083	1.817
11	Cardinals	11	5/8/2005	STL	vs	SDP	10	7	3	0	0	10	5	1	0	16	10	3	0	0	0	.700	.813	1.000	1.813
12	Red Sox	11	6/26/1999	BOS	vs	CWS	12	9	4	0	2	11	2	0	1	14	19	6	0	0	0	.750	.786	1.583	2.369
13	Cardinals	11	8/7/1998	STL	vs	CHC	10	6	3	0	1	10	4	0	2	15	12	4	1	0	1	.600	.714	1.200	1.914
14	Rangers	11	8/21/1995	TEX	vs	MIN	10	8	1	1	3	11	4	0	0	15	20	5	1	0	0	.800	.857	2.000	2.857
15	Angels	11	6/29/1995	CAL	@	TEX	11	7	0	1	0	9	3	1	0	15	9	1	0	0	0	.636	.733	.818	1.552
16	Tigers	11	9/20/1983	DET	vs	BAL	14	11	0	2	2	10	2	0	1	16	21	4	0	0	0	.786	.813	1.500	2.313
17	Tigers	11	7/15/1982	DET	@	MIN	13	9	3	0	1	11	1	0	1	14	15	4	0	0	0	.692	.714	1.154	1.868
18	Nationals	10	5/31/2025	WSH	@	AZ	12	9	5	0	0	10	1	3	1	16	14	5	0	0	0	.750	.813	1.167	1.979
19	Reds	10	5/10/2025	CIN	@	HOU	8	5	1	0	1	10	5	1	1	14	9	2	0	0	0	.625	.786	1.125	1.911
20	Giants	10	5/4/2021	SFG	@	COL	11	8	2	0	2	10	2	0	1	13	16	4	0	0	0	.727	.769	1.455	2.224
21	Cardinals	10	10/9/2019	STL	@	ATL	9	5	3	0	0	9	4	0	1	14	8	3	1	0	1	.556	.692	.889	1.581
22	Phillies	10	4/16/2019	PHI	vs	NYM	11	6	4	0	2	10	2	1	1	14	16	6	0	0	0	.545	.643	1.455	2.097
23	Royals	10	5/8/2018	KCR	@	BAL	11	9	0	0	4	10	2	0	0	14	21	4	0	1	0	.818	.786	1.909	2.695
24	Pirates	10	7/9/2017	PIT	@	CHC	10	7	1	0	2	10	4	0	0	15	14	3	1	0	0	.700	.786	1.400	2.186
25	Brewers	10	4/18/2010	MIL	@	WSH	8	6	0	0	1	10	3	2	1	14	9	1	0	1	0	.750	.786	1.125	1.911