The Washington Senators have the most bases on balls by a team in a game, with 19 bases on balls versus the Cleveland Indians on September 14, 1971.

Interpreted as:

most walks in a single regular-season game both teams

	TEAM	BB	DATE	TM		OPP	RESULT	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Senators	19	9/14/1971	WSH	@	CLE	W 8-6	71	8	14	2	0	1	6	0	9	3	0	93	19	3	3	0	1	0	.197	.367	.268	.634
2	Diamondbacks	18	8/24/2013	ARI	@	PHI	W 12-7	70	12	22	4	1	1	11	0	12	0	0	90	31	6	2	0	3	4	.314	.455	.443	.897
3	Phillies	18	7/2/2004	PHI	vs	BAL	L 6-7	55	6	10	2	0	0	6	0	19	3	0	74	12	2	1	0	4	2	.182	.384	.218	.602
4	Twins	18	7/19/1969	MIN	@	SEA	W 11-7	66	11	16	6	0	2	10	0	14	4	1	88	28	8	2	2	2	0	.242	.395	.424	.820
5	Indians	18	5/20/1948	CLE	vs	BSA	W 13-4	29	13	8	1	0	1	13	0	7	0	1	48	12	2	1			2	.276	.553	.414	.967
6	Red Sox	18	9/17/1920	BSA	@	DET	L 13-14	44	13	9	3	1	0	4	0	4	0	0	64	14	4	2				.205	.435	.318	.754
7	Tigers	18	5/9/1916	DET	@	PHA	W 16-2	36	16	12	4	0	0	14	0	3	1		56	16	4	2				.333	.556	.444	1.000
8	Mets	17	4/14/2023	NYM	@	OAK	W 17-6	37	17	11	4	0	1	17	2	7	1	0	56	18	5	0	0	0	1	.297	.536	.486	1.022
9	Astros	17	8/20/1999	HOU	@	FLA	W 6-4	54	6	7	2	0	3	6	0	21	2	0	74	18	5	2	1	3	0	.130	.333	.333	.667
10	Rangers	17	8/9/1974	TEX	vs	DET	W 4-3	45	4	13	1	0	0	4	0	5	2	2	67	14	1	5	0	5	2	.289	.484	.311	.795
11	Yankees	17	9/11/1949	NYY	vs	WSH	W 20-5	39	20	17	3	1	0	19	0	4	1	0	56	22	4	0			1	.436	.607	.564	1.171
12	Giants	17	4/30/1944	NYG	vs	BKN	W 26-8	42	26	18	8	2	2	26	0	5	1	0	60	36	12	1			0	.429	.593	.857	1.450
13	Browns	17	6/12/1943	SLA	@	CLE	W 7-6	38	7	9	0	1	1	7	0	13	1	0	58	14	2	3			0	.237	.473	.368	.841
14	Superbas	17	8/27/1903	BKN	vs	PHN	W 11-10	28	11	7	1	0	0	10	1	1	1	-13	47	8	1	1		-13	-13	.250	.543	.286	.829
15	Marlins	16	4/27/2003	FLA	vs	STL	L 6-7	66	6	13	3	0	3	6	2	15	1	1	87	25	6	3	0	4	1	.197	.369	.379	.748
16	Mariners	16	5/9/2002	SEA	vs	TOR	W 8-7	43	8	14	3	1	1	7	0	5	6	1	60	22	5	1	0	3	0	.326	.508	.512	1.020
17	Rockies	16	7/16/1994	COL	vs	STL	W 15-4	32	15	13	4	0	3	14	0	6	0	2	50	26	7	1	1	2	0	.406	.592	.813	1.404
18	Reds	16	10/1/1978	CIN	vs	ATL	W 10-8	46	10	12	1	0	3	9	2	11	1	2	67	22	4	2	1	2	2	.261	.462	.478	.940
19	Cardinals	16	9/13/1974	STL	@	PHI	W 7-3	55	7	15	0	1	0	6	1	7	2	2	75	17	1	1	2	5	5	.273	.432	.309	.742
20	Mets	16	6/29/1962	NYM	@	LAD	W 10-4	29	10	4	1	0	1	10	1	6	2	1	47	8	2	1	0	0	0	.138	.457	.276	.732
21	Athletics	16	5/2/1952	PHA	vs	CWS	W 13-12	34	13	11	3	1	0	12	0	7	0	1	51	16	4	1		1	2	.324	.540	.471	1.011
22	Red Sox	16	8/22/1951	BSA	@	SLA	W 3-1	48	3	11	4	0	0	3	0	6	0	0	64	15	4	0		0	1	.229	.422	.313	.734
23	Indians	16	6/18/1950	CLE	vs	PHA	W 21-2	37	21	14	1	0	2	18	0	4	0	0	53	21	3	0		0	2	.378	.566	.568	1.134
24	Athletics	16	6/21/1948	PHA	@	SLA	L 8-9	32	8	7	1	0	0	7	0	5	3	0	50	8	1	2			1	.219	.479	.250	.729
25	Indians	16	6/24/1936	CLE	vs	PHA	W 14-2	38	14	14	4	0	2	12	0	9	2	1	54	24	6	0				.368	.556	.632	1.187