The Colorado Rockies have the best slugging percentage by a team in a game, with a slugging percentage of 1.205 against the Reds on May 31, 2016.

Interpreted as:

highest slg as a team in one regular-season game

	TEAM	SLG	DATE	TM		OPP	RESULT	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	OPS
1	Rockies	1.205	5/31/2016	COL	vs	CIN	W 17-4	39	17	19	7	0	7	17	5	0	5	0	0	46	47	14	1	1	0	2	.487	.533	1.738
2	Blue Jays	1.205	9/14/1987	TOR	vs	BAL	W 18-3	44	18	21	2	0	10	18	4	0	4	0	0	48	53	12	0	0	0	1	.477	.521	1.725
3	Nationals	1.175	8/18/2019	WSH	vs	MIL	W 16-8	40	16	19	2	1	8	16	4	0	3	0	0	46	47	11	2	0	0	1	.475	.523	1.698
4	Braves	1.171	5/21/2021	ATL	vs	PIT	W 20-1	41	20	20	7	0	7	20	5	0	9	0	0	49	48	14	1	2	0	0	.488	.521	1.692
5	Senators	1.167	6/20/1920	WSH	@	DET	W 9-4	18	9	8	3	2	2	8	4	0	1	2	1	24	21	7	2				.444	.545	1.712
6	Pirates	1.147	8/16/1947	PIT	vs	SLN	W 12-7	34	12	16	2	0	7	12	8	1	2	0	0	44	39	9	1			2	.471	.581	1.728
7	Red Sox	1.146	9/4/2013	BOS	vs	DET	W 20-4	41	20	19	4	0	8	20	4	2	10	1	0	48	47	12	0	1	1	1	.463	.521	1.667
8	Tigers	1.146	6/20/2000	DET	@	TOR	W 18-6	41	18	18	3	1	8	18	9	0	3	0	0	50	47	12	0	0	0	4	.439	.540	1.686
9	Nationals	1.143	7/27/2017	WSH	vs	MIL	W 15-2	42	15	19	5	0	8	15	5	0	9	1	0	48	48	13	1	0	0	0	.452	.511	1.653
10	Cardinals	1.140	5/7/1940	SLN	vs	BKN	W 18-2	43	18	20	4	2	7	18	0	3	1	1	0	47	49	13	1			1	.465	.500	1.640
11	Expos	1.137	7/30/1978	MON	@	ATL	W 19-0	51	19	28	6	0	8	19	3	1	6	0	0	57	58	14	1	1	0	1	.549	.571	1.709
12	Indians	1.135	4/25/1997	CLE	@	MIL	W 11-4	37	11	14	4	0	8	11	7	0	6	0	1	45	42	12	1	0	0	2	.378	.477	1.612
13	Red Sox	1.132	6/8/1950	BSA	vs	SLA	W 29-4	53	29	28	9	1	7	29	11	0	2	0	0	64	60	17	0		0	0	.528	.609	1.741
14	Yankees	1.125	3/29/2025	NYY	vs	MIL	W 20-9	40	20	16	2	0	9	20	8	2	5	0	0	51	45	11	0	1	0	0	.400	.510	1.635
15	Giants	1.118	6/24/1950	NYG	vs	CIN	W 12-2	34	12	13	2	1	7	12	9	1	1	0	0	45	38	10	1		2	2	.382	.523	1.640
16	Blue Jays	1.116	8/7/2010	TOR	vs	TBR	W 17-11	43	17	20	4	0	8	17	6	0	4	0	0	49	48	12	0	0	0	1	.465	.531	1.647
17	Dodgers	1.114	7/10/2021	LAD	vs	ARI	W 22-1	44	22	21	2	1	8	22	8	1	4	0	0	53	49	11	0	0	0	2	.477	.566	1.680
18	Phillies	1.105	9/8/1998	PHI	vs	NYM	W 16-4	38	16	17	4	0	7	15	5	0	5	2	0	43	42	11	0	0	1	2	.447	.512	1.617
19	Orioles	1.103	6/16/2015	BAL	vs	PHI	W 19-3	39	19	17	2	0	8	17	8	1	7	0	0	49	43	10	0	1	0	2	.436	.531	1.633
20	Rangers	1.100	5/21/2005	TEX	vs	HOU	W 18-3	40	18	17	3	0	8	17	5	0	9	0	1	45	44	11	0	0	0	0	.425	.489	1.589
21	Diamondbacks	1.093	5/17/2014	ARI	vs	LAD	W 18-7	43	18	21	5	3	5	18	6	0	9	2	0	50	47	13	1	0	0	1	.488	.551	1.644
22	Cubs	1.088	5/31/1954	CHC	vs	STL	W 14-4	34	14	14	1	2	6	14	3	1	3	0	0	39	37	9	0	1	1	0	.412	.462	1.550
23	Indians	1.087	7/16/2004	CLE	@	SEA	W 18-6	46	18	21	5	0	8	18	5	3	5	0	0	55	50	13	1	0	0	0	.457	.537	1.624
24	Yankees	1.087	6/3/1932	NYY	@	PHA	W 20-13	46	20	23	2	2	7	19	6	0	9	1	1	53	50	11	1				.500	.558	1.645
25	Mets	1.085	8/24/2015	NYM	@	PHI	W 16-7	47	16	20	7	0	8	16	2	1	8	0	0	50	51	15	0	0	0	0	.426	.460	1.545