highest obp in a calendar month in mlb history minimum 50 at bats

Barry Bonds has the best on-base percentage with 50+ at-bats in a month, with an on-base percentage of .696 in April 2004.

Interpreted as:

highest obp by a player in a calendar month in MLB history minimum 50 at bats

	NAME	OBP	AB	MONTH	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS
1	Barry Bonds B. Bonds	.696	53	April 2004	23	21	25	5	0	10	22	39	0	6	2	0	92	60	15	0	0	18	2	.472	1.132	1.828
2	Larry Walker L. Walker	.632	53	September 1998	19	21	28	4	0	3	9	15	0	11	4	0	68	41	7	0	0	1	1	.528	.774	1.406
3	Barry Bonds B. Bonds	.621	76	August 2002	27	24	34	6	0	11	25	37	1	7	1	1	116	73	17	0	2	11	1	.447	.961	1.581
4	Barry Bonds B. Bonds	.615	70	August 2004	27	27	29	6	1	11	27	38	0	7	2	1	109	70	18	0	1	15	0	.414	1.000	1.615
5	Barry Bonds B. Bonds	.614	69	September 2002	25	20	25	4	0	6	22	43	2	7	3	0	114	47	10	0	0	15	1	.362	.681	1.295
6	Barry Bonds B. Bonds	.612	67	June 2004	27	23	22	4	0	6	14	46	3	6	0	0	116	44	10	0	0	23	0	.328	.657	1.269
7	Barry Bonds B. Bonds	.611	63	September 2004	25	22	22	4	2	7	13	40	4	12	0	0	108	51	13	0	1	23	1	.349	.810	1.421
8	Babe Ruth B. Ruth	.611	100	July 1920	34	45	44	10	2	13	33	43	1	19	5		147	97	25	3				.440	.970	1.581
9	Barry Bonds B. Bonds	.604	70	June 2002	26	19	26	4	1	7	17	40	1	8	1	0	111	53	12	0	0	17	1	.371	.757	1.361
10	Jason Giambi J. Giambi	.604	80	June 2000	25	24	36	11	0	5	23	30	1	14	1	0	111	62	16	0	0	2	2	.450	.775	1.379
11	Barry Bonds B. Bonds	.600	64	April 2002	24	22	24	5	0	8	17	32	4	5	1	0	100	53	13	0	0	12	0	.375	.828	1.428
12	Joe Jackson J. Jackson	.598	83	September 1912	25	24	42	6	4	0	23	14	5	2	3		106	56	10	4				.506	.675	1.273
13	Dale Alexander D. Alexander	.597	52	April 1931	14	7	27	7	1	1	9	10	0	1	0		62	39	9	0				.519	.750	1.347
14	Ted Williams T. Williams	.595	87	June 1948	24	24	40	12	0	5	28	29	0	3	0		116	67	17	0			2	.460	.770	1.365
15	Frank Thomas F. Thomas	.593	84	May 1994	25	39	38	9	0	12	28	31	1	11	0	0	118	83	21	0	2	3	3	.452	.988	1.581
16	Ted Williams T. Williams	.592	107	August 1941	35	31	43	4	2	10	26	50	0	8	0		157	81	16	0			2	.402	.757	1.349
17	Ted Williams T. Williams	.589	65	September 1942	20	26	28	4	0	9	20	25	0	5	0		90	59	13	0			3	.431	.908	1.497
18	Todd Helton T. Helton	.588	82	May 2000	23	32	42	7	0	11	26	18	0	9	0	0	102	82	18	0	2	5	2	.512	1.000	1.588
19	Harry Heilmann H. Heilmann	.586	97	August 1927	28	28	49	9	3	5	22	19	0	1	1		119	79	17	3				.505	.814	1.401
20	Babe Ruth B. Ruth	.586	86	August 1923	25	25	38	9	1	8	30	28	2	12	2		117	73	18	1				.442	.849	1.435
21	Charlie Gehringer C. Gehringer	.586	122	August 1937	32	38	59	11	0	7	38	30	0	2	6		152	91	18	0				.484	.746	1.331
22	Rogers Hornsby R. Hornsby	.584	100	June 1925	28	31	48	9	2	9	31	25	0	6	2		126	88	20	1				.480	.880	1.464
23	Lou Gehrig L. Gehrig	.582	111	June 1930	28	37	55	11	3	10	41	20	3	10	5		137	102	24	3				.495	.919	1.501
24	Barry Bonds B. Bonds	.581	65	July 2003	23	25	27	5	0	11	21	26	1	10	0	0	93	65	16	0	1	8	0	.415	1.000	1.581
25	Wade Boggs W. Boggs	.581	101	June 1987	26	26	49	8	4	4	19	22	1	5	0	0	125	77	16	1	0	8	4	.485	.762	1.343