The Brooklyn Robins had the best on-base percentage by a team in a game in 1930, with an on-base percentage of .615 against the Phillies on September 6, 1930.

Interpreted as:

highest obp by a team in a regular-season game in 1930

	TEAM	OBP	DATE	TM		OPP	RESULT	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	AVG	SLG	OPS
1	Robins	.615	9/6/1930	BKN	vs	PHN	W 22-8	44	22	24	1	3	3	22	8	0	1	0	0	52	40	7	0	.545	.909	1.524
2	Yankees	.596	5/22/1930	NYY	@	PHA	W 20-13	46	20	23	5	0	5	20	10	1	5	2	0	59	43	10	2	.500	.935	1.531
3	Robins	.596	6/23/1930	BKN	@	PIT	W 19-6	49	19	28	6	1	3	17	3	0	6	1	0	54	45	10	2	.571	.918	1.515
4	Pirates	.596	6/14/1930	PIT	@	PHN	W 19-12	40	19	21	7	1	0	19	7	0	2	1	0	51	30	8	4	.525	.750	1.346
5	Indians	.593	5/11/1930	CLE	vs	PHA	W 25-7	47	25	25	9	0	0	24	7	0	2	1	0	57	34	9	3	.532	.723	1.316
6	Athletics	.588	9/25/1930	PHA	vs	NYY	W 13-3	31	13	17	4	2	0	13	2	1	2	1	2	35	25	6	1	.548	.806	1.395
7	Yankees	.588	9/16/1930	NYY	@	SLA	W 19-10	44	19	23	7	0	0	19	7	0	4	3	0	55	30	7	4	.523	.682	1.270
8	Indians	.588	6/5/1930	CLE	vs	BSA	W 17-7	46	17	25	1	1	1	17	4	1	1	0	0	52	31	3	1	.543	.674	1.262
9	Braves	.581	7/20/1930	BSN	vs	CIN	W 13-1	37	13	19	4	2	1	12	4	2	4	1	0	48	30	7	5	.514	.811	1.392
10	Cardinals	.574	9/23/1930	SLN	@	PHN	W 19-16	49	19	26	7	0	0	18	5	0	5	1	0	54	33	7	0	.531	.673	1.248
11	Robins	.568	8/31/1930	BKN	vs	PHN	W 14-3	42	14	23	3	0	3	13	2	0	1	0	0	46	35	6	2	.548	.833	1.402
12	Athletics	.568	6/23/1930	PHA	vs	CWS	W 17-9	39	17	20	4	1	5	17	5	0	2	1	1	46	41	10	2	.513	1.051	1.619
13	Cardinals	.568	4/16/1930	SLN	vs	CHC	W 13-3	39	13	20	7	0	1	13	5	0	2	1	0	46	30	8	2	.513	.769	1.337
14	Phillies	.565	8/10/1930	PHN	@	CIN	W 18-0	41	18	21	7	1	0	17	5	0	4	0	0	51	30	8	5	.512	.732	1.297
15	Robins	.560	7/24/1930	BKN	vs	CIN	W 9-0	23	9	12	2	1	0	9	2	0	2	0	0	27	16	3	2	.522	.696	1.256
16	Athletics	.558	8/26/1930	PHA	vs	WSH	W 10-9	34	10	15	1	2	2	10	9	0	2	0	0	47	26	5	4	.441	.765	1.323
17	Pirates	.558	9/16/1930	PIT	@	PHN	L 14-15	45	14	22	2	0	3	14	7	0	2	0	0	53	33	5	1	.489	.733	1.291
18	Red Sox	.558	5/5/1930	BSA	vs	CLE	W 18-3	46	18	23	5	2	0	17	6	0	0	0	0	53	32	7	1	.500	.696	1.253
19	White Sox	.556	7/2/1930	CWS	@	NYY	W 15-4	39	15	19	3	1	4	15	5	1	1	2	3	49	36	8	4	.487	.923	1.479
20	Senators	.553	6/25/1930	WSH	vs	CLE	W 13-5	37	13	16	2	1	0	9	10	0	1	0	1	48	20	3	1	.432	.541	1.094
21	Yankees	.553	5/10/1930	NYY	vs	DET	W 14-5	37	14	16	2	2	1	13	9	1	3	2	0	49	25	5	2	.432	.676	1.229
22	Cubs	.549	6/23/1930	CHC	vs	PHN	W 21-8	47	21	24	3	2	1	20	4	0	5	2	0	51	34	6	0	.511	.723	1.272
23	Cubs	.549	6/4/1930	CHC	@	BSN	W 18-10	43	18	20	6	1	2	18	7	1	1	0	0	52	34	9	1	.465	.791	1.340
24	Phillies	.549	4/23/1930	PHN	vs	BKN	W 16-15	44	16	21	1	0	2	14	7	0	6	1	0	55	28	3	4	.477	.636	1.185
25	Tigers	.548	7/11/1930	DET	vs	CLE	W 11-1	37	11	18	0	1	0	10	4	1	1	1	1	44	20	1	2	.486	.541	1.088