most runs in the first inning by a team in a game since 2000

Since 2000, the Boston Red Sox have scored the most runs by a team in a game in the 1st inning, with 13 runs against the Florida Marlins on June 27, 2003.

Interpreted as:

most runs in the first inning by a team in a regular-season game since 2000

	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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	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
15	Phillies	10	7/6/2009	PHI	vs	CIN	9	6	2	0	3	10	3	1	2	13	17	5	0	0	0	.667	.769	1.889	2.658
16	Red Sox	10	8/12/2008	BOS	vs	TEX	11	7	1	0	2	10	2	0	2	13	14	3	0	0	0	.636	.692	1.273	1.965
17	Dodgers	10	4/26/2008	LAD	vs	COL	8	6	1	0	1	10	3	1	0	13	10	2	0	1	0	.750	.769	1.250	2.019
18	Tigers	10	9/23/2006	DET	@	KCR	12	9	2	1	1	10	4	0	0	16	16	4	0	0	0	.750	.813	1.333	2.146
19	Royals	10	8/23/2006	KCR	vs	CLE	15	11	1	1	2	10	0	0	1	15	20	4	0	0	0	.733	.733	1.333	2.067
20	Devil Rays	10	5/25/2005	TBD	vs	OAK	11	8	3	1	2	10	1	0	0	13	19	6	0	1	0	.727	.692	1.727	2.420
21	Dodgers	10	5/6/2005	LAD	@	CIN	8	6	3	0	2	10	3	2	1	14	15	5	1	0	0	.750	.846	1.875	2.721
22	Phillies	10	6/2/2002	PHI	vs	MON	9	6	1	0	2	10	5	0	1	14	13	3	0	0	1	.667	.786	1.444	2.230
23	Mariners	10	5/2/2002	SEA	@	CWS	11	8	1	0	4	10	0	1	0	13	21	5	0	1	0	.727	.692	1.909	2.601
24	Braves	10	10/5/2001	ATL	vs	FLA	5	3	0	0	1	10	7	0	2	13	6	1	0	1	0	.600	.769	1.200	1.969
25	Reds	9	9/4/2024	CIN	vs	HOU	10	6	2	0	1	7	3	0	0	13	11	3	0	0	0	.600	.692	1.100	1.792