The Houston Astros hit their most homers in a postseason game in Game 5 of the 2017 World Series versus the Dodgers, with 5 homers.

Interpreted as:

most postseason homeruns in a game astros history

	TEAM	HR	DATE	TM		OPP	RESULT	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Astros	5	10/29/2017	HOU	vs	LAD	W 13-12	41	13	14	3	0	13	5	1	6	0	0	47	32	8	0	0	0	2	.341	.426	.780	1.206
2	Astros	4	10/10/2023	HOU	@	MIN	W 9-1	41	9	14	2	0	9	3	0	12	0	0	45	28	6	1	0	0	0	.341	.386	.683	1.069
3	Astros	4	10/8/2020	HOU	vs	OAK	W 11-6	37	11	14	0	0	11	5	1	7	0	0	43	26	4	0	0	0	2	.378	.465	.703	1.168
4	Astros	4	10/5/2018	HOU	vs	CLE	W 7-2	32	7	12	2	0	7	2	2	3	0	1	36	26	6	0	0	0	2	.375	.444	.813	1.257
5	Astros	4	10/25/2017	HOU	@	LAD	W 7-6	43	7	14	3	0	7	5	0	8	1	0	49	29	7	1	0	2	3	.326	.396	.674	1.070
6	Astros	4	10/5/2017	HOU	vs	BOS	W 8-2	34	8	12	3	0	8	2	0	8	0	1	36	27	7	0	0	0	1	.353	.389	.794	1.183
7	Astros	4	10/12/2015	HOU	vs	KCR	L 6-9	36	6	9	1	0	6	5	1	16	0	0	42	22	5	0	0	1	0	.250	.357	.611	.968
8	Astros	4	10/13/2004	HOU	@	STL	L 7-10	37	7	10	2	0	7	1	0	9	0	0	38	24	6	0	0	0	0	.270	.289	.649	.938
9	Astros	4	10/6/2004	HOU	@	ATL	W 9-3	39	9	13	2	0	9	1	1	12	2	1	41	27	6	0	0	0	0	.333	.366	.692	1.058
10	Astros	3	10/16/2023	HOU	vs	TEX	L 4-5	34	4	6	1	0	4	3	0	10	0	0	37	16	4	0	0	0	0	.176	.243	.471	.714
11	Astros	3	10/7/2023	HOU	vs	MIN	W 6-4	31	6	9	1	0	6	4	1	7	1	0	36	19	4	0	0	0	0	.290	.389	.613	1.002
12	Astros	3	10/19/2022	HOU	vs	NYY	W 4-2	30	4	7	3	0	4	5	0	2	0	0	35	19	6	0	0	1	1	.233	.343	.633	.976
13	Astros	3	10/11/2022	HOU	vs	SEA	W 8-7	36	8	11	1	0	8	2	1	8	0	0	39	21	4	0	0	0	1	.306	.359	.583	.942
14	Astros	3	10/6/2020	HOU	@	OAK	W 5-2	31	5	6	1	0	5	2	1	4	0	0	34	16	4	0	0	0	2	.194	.265	.516	.781
15	Astros	3	10/5/2020	HOU	@	OAK	W 10-5	41	10	16	1	0	10	1	2	9	0	1	45	26	4	0	1	0	0	.390	.422	.634	1.056
16	Astros	3	10/27/2019	HOU	@	WSH	W 7-1	34	7	10	1	0	7	4	0	4	0	0	38	20	4	0	0	1	3	.294	.368	.588	.957
17	Astros	3	10/8/2018	HOU	@	CLE	W 11-3	41	11	13	3	0	10	8	1	14	0	0	50	25	6	0	0	2	0	.317	.440	.610	1.050
18	Astros	3	10/9/2005	HOU	vs	ATL	W 7-6	58	7	10	1	0	7	6	0	14	2	0	66	20	4	1	1	1	2	.172	.246	.345	.591
19	Astros	3	10/16/2004	HOU	vs	STL	W 5-2	31	5	8	1	0	5	3	0	5	0	0	34	18	4	0	0	0	1	.258	.324	.581	.904
20	Astros	3	10/11/2004	HOU	@	ATL	W 12-3	39	12	17	4	0	12	2	0	2	0	0	43	30	7	1	1	0	2	.436	.452	.769	1.222
21	Astros	2	10/23/2023	HOU	vs	TEX	L 4-11	38	4	12	2	1	4	3	1	4	1	0	42	22	5	0	0	1	1	.316	.381	.579	.960
22	Astros	2	10/20/2023	HOU	@	TEX	W 5-4	36	5	8	1	0	5	4	0	7	0	0	40	15	3	0	0	0	0	.222	.300	.417	.717
23	Astros	2	10/19/2023	HOU	@	TEX	W 10-3	36	10	11	2	1	10	7	1	8	1	0	45	21	5	0	1	0	1	.306	.422	.583	1.006
24	Astros	2	10/11/2023	HOU	@	MIN	W 3-2	33	3	6	0	0	3	0	0	10	0	0	33	12	2	0	0	0	0	.182	.182	.364	.545
25	Astros	2	10/28/2022	HOU	vs	PHI	L 5-6	39	5	10	2	0	5	4	0	12	1	0	43	18	4	0	0	0	1	.256	.326	.462	.787