team most runs in a game in losses in the 1st inning

The Kansas City Royals and the Pittsburgh Pirates are tied for the most runs in a loss in the 1st inning, with 10 runs.

Interpreted as:

team most runs in a regular-season game in losses in the 1st inning

	TEAM	R	L	DATE	TM		OPP	W	L%	AB	H	2B	3B	HR	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Royals	10	15	8/23/2006	KCR	vs	CLE	0	1.000	15	11	1	1	2	10	0	0	1	15	20	4	0	0	0	.733	.733	1.333	2.067
2	Pirates	10	16	6/8/1989	PIT	@	PHI	0	1.000	11	8	1	0	1	10	5	0	0	16	12	2	0	0	1	.727	.813	1.091	1.903
3	Pirates	9	14	8/1/2025	PIT	@	COL	0	1.000	12	10	0	0	2	9	2	0	1	14	16	2	0	0	0	.833	.857	1.333	2.190
4	Twins	8	11	5/20/1998	MIN	vs	DET	0	1.000	10	7	1	0	1	8	1	0	0	11	11	2	0	0	0	.700	.727	1.100	1.827
5	Indians	8	12	5/20/1986	CLE	@	MIL	0	1.000	9	6	1	1	0	7	3	0	0	12	9	2	0	0	0	.667	.750	1.000	1.750
6	Mariners	7	10	6/7/2024	SEA	@	KCR	0	1.000	7	4	2	0	1	7	1	2	0	10	9	3	0	0	0	.571	.700	1.286	1.986
7	Cubs	7	12	6/30/2021	CHC	@	MIL	0	1.000	9	5	0	0	0	6	3	0	1	12	5	0	0	0	0	.556	.667	.556	1.222
8	Yankees	7	11	6/30/2021	NYY	vs	LAA	0	1.000	6	3	1	0	0	7	4	1	1	11	4	1	0	0	0	.500	.727	.667	1.394
9	Phillies	7	11	8/20/2020	PHI	@	TOR	0	1.000	8	6	2	0	0	7	1	1	2	11	8	2	0	1	0	.750	.727	1.000	1.727
10	Twins	7	12	5/14/2006	MIN	vs	CWS	0	1.000	11	7	2	0	0	7	0	0	1	12	9	2	0	1	0	.636	.583	.818	1.402
11	Royals	7	13	8/22/2001	KCR	vs	CWS	0	1.000	11	9	4	1	0	7	2	0	0	13	15	5	0	0	0	.818	.846	1.364	2.210
12	Indians	7	11	9/21/2000	CLE	@	BOS	0	1.000	7	4	2	0	0	7	4	0	1	11	6	2	0	0	0	.571	.727	.857	1.584
13	Blue Jays	7	11	6/4/1995	TOR	@	CLE	0	1.000	5	4	0	0	1	7	4	0	0	11	7	1	1	1	0	.800	.800	1.400	2.200
14	Astros	7	11	7/15/1994	HOU	@	PIT	0	1.000	9	7	1	0	0	7	1	0	0	11	8	1	1	0	0	.778	.800	.889	1.689
15	Angels	7	11	7/30/1983	CAL	vs	OAK	0	1.000	9	8	2	0	0	7	1	0	1	11	10	2	1	0	0	.889	.900	1.111	2.011
16	White Sox	7	11	7/20/1976	CWS	vs	NYY	0	1.000	8	6	0	0	1	7	2	0	0	11	9	1	0	1	0	.750	.727	1.125	1.852
17	Giants	7	11	4/26/1976	SFG	vs	STL	0	1.000	10	8	0	0	1	5	1	0	0	11	11	1	0	0	0	.800	.818	1.100	1.918
18	Marlins	6	10	5/27/2025	MIA	@	SDP	0	1.000	8	5	0	0	0	6	1	0	0	10	5	0	0	1	0	.625	.600	.625	1.225
19	Blue Jays	6	11	9/3/2024	TOR	vs	PHI	0	1.000	11	8	1	0	2	6	0	0	2	11	15	3	0	0	0	.727	.727	1.364	2.091
20	Marlins	6	10	4/28/2024	MIA	vs	WSH	0	1.000	10	6	0	2	1	6	0	0	1	10	13	3	0	0	0	.600	.600	1.300	1.900
21	Diamondbacks	6	11	4/6/2024	ARI	@	ATL	0	1.000	10	7	1	0	1	6	1	0	0	11	11	2	0	0	0	.700	.727	1.100	1.827
22	Cubs	6	10	8/27/2021	CHC	@	CWS	0	1.000	9	6	1	0	1	5	1	0	1	10	10	2	0	0	0	.667	.700	1.111	1.811
23	Astros	6	9	7/26/2021	HOU	@	SEA	0	1.000	8	5	1	0	2	6	1	0	1	9	12	3	0	0	0	.625	.667	1.500	2.167
24	Pirates	6	11	7/18/2021	PIT	vs	NYM	0	1.000	7	4	2	0	0	4	4	0	0	11	6	2	0	0	0	.571	.727	.857	1.584
25	Red Sox	6	10	6/29/2019	BOS	vs	NYY	0	1.000	7	5	1	0	1	6	2	0	0	10	9	2	0	1	0	.714	.700	1.286	1.986