The Boston Red Sox have the most runs by a team in a postseason game, with 23 runs in Game 4 of the 1999 ALDS versus the Cleveland Indians.

	TEAM	R	DATE	TM		OPP	RESULT	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Red Sox	23	10/10/1999	BOS	vs	CLE	W 23-7	48	24	7	1	4	23	5	2	9	1	0	56	45	12	0	1	0	0	.500	.554	.938	1.491
2	Yankees	19	10/16/2004	NYY	@	BOS	W 19-8	47	22	8	1	4	18	5	1	5	0	0	53	44	13	0	0	1	1	.468	.528	.936	1.464
3	Yankees	18	10/2/1936	NYY	@	NYG	W 18-4	41	17	1	0	2	18	9	0	3	1	2	51	24	3	1		0	0	.415	.520	.585	1.105
4	Indians	17	10/13/2001	CLE	vs	SEA	W 17-2	41	19	5	1	3	17	7	1	4	0	0	50	35	9	0	1	0	1	.463	.540	.854	1.394
5	Red Sox	16	10/8/2018	BOS	@	NYY	W 16-1	44	18	3	1	1	15	8	0	4	2	0	53	26	5	0	1	0	0	.409	.491	.591	1.081
6	Cardinals	16	10/22/2011	STL	@	TEX	W 16-7	42	15	3	0	4	14	6	0	7	0	1	49	30	7	0	1	1	1	.357	.429	.714	1.143
7	Giants	16	10/24/2002	SFG	vs	ANA	W 16-4	37	16	3	1	3	15	6	1	6	0	0	48	30	7	2	2	3	0	.432	.500	.811	1.311
8	Yankees	16	10/6/1960	NYY	@	PIT	W 16-3	45	19	3	1	2	15	5	0	11	0	1	51	30	6	1	0	0	0	.422	.480	.667	1.147
9	Dodgers	15	10/14/2020	LAD	@	ATL	W 15-3	43	16	3	0	5	15	8	3	12	0	0	54	34	8	0	0	0	0	.372	.500	.791	1.291
10	Rangers	15	10/15/2011	TEX	vs	DET	W 15-5	41	17	4	0	2	15	8	0	4	2	1	50	27	6	0	1	2	0	.415	.500	.659	1.159
11	Diamondbacks	15	11/3/2001	ARI	vs	NYY	W 15-2	46	22	6	0	0	15	3	0	9	0	0	49	28	6	0	0	1	1	.478	.510	.609	1.119
12	Braves	15	10/17/1996	ATL	vs	STL	W 15-0	42	17	2	2	3	14	4	1	4	0	0	47	32	7	0	0	0	0	.405	.468	.762	1.230
13	Blue Jays	15	10/20/1993	TOR	@	PHI	W 15-14	44	18	5	1	0	15	7	1	6	2	0	52	25	6	0	0	0	0	.409	.500	.568	1.068
14	Red Sox	14	10/8/2021	BOS	@	TBR	W 14-6	45	20	4	0	5	14	3	0	10	0	0	48	39	9	0	0	0	2	.444	.479	.867	1.346
15	Royals	14	10/20/2015	KCR	@	TOR	W 14-2	36	15	1	0	2	12	5	2	5	1	1	47	22	3	0	4	0	0	.417	.468	.611	1.079
16	White Sox	14	10/4/2005	CWS	vs	BOS	W 14-2	33	11	1	0	5	14	3	3	2	1	1	40	27	6	1	0	0	0	.333	.436	.818	1.254
17	Mariners	14	10/20/2001	SEA	@	NYY	W 14-3	45	15	1	2	3	13	7	0	10	2	0	52	29	6	0	0	1	0	.333	.423	.644	1.068
18	Marlins	14	10/21/1997	FLA	@	CLE	W 14-11	42	16	1	0	3	12	8	0	8	0	0	50	26	4	0	0	2	2	.381	.480	.619	1.099
19	Braves	14	10/14/1996	ATL	@	STL	W 14-0	47	22	4	1	2	14	5	0	7	1	0	52	34	7	0	0	0	1	.468	.519	.723	1.243
20	Phillies	14	10/20/1993	PHI	vs	TOR	L 14-15	41	14	3	1	3	14	7	1	7	2	0	49	28	7	0	0	0	0	.341	.449	.683	1.132
21	Braves	14	10/7/1993	ATL	@	PHI	W 14-3	43	16	3	0	4	14	4	0	9	0	1	47	31	7	0	0	0	0	.372	.426	.721	1.146
22	Braves	14	10/24/1991	ATL	vs	MIN	W 14-5	39	17	2	3	3	14	4	0	6	2	0	43	34	8	0	0	0	1	.436	.488	.872	1.360
23	Cardinals	13	10/9/2019	STL	@	ATL	W 13-1	39	11	4	1	0	12	5	1	12	0	0	46	17	5	1	0	1	1	.282	.378	.436	.814
24	Astros	13	10/29/2017	HOU	vs	LAD	W 13-12	41	14	3	0	5	13	5	1	6	0	0	47	32	8	0	0	0	2	.341	.426	.780	1.206
25	Mets	13	10/12/2015	NYM	vs	LAD	W 13-7	36	13	4	0	2	13	5	0	10	0	0	42	23	6	0	1	1	0	.361	.429	.639	1.067