Paul Waner has gotten the most doubles in a month, with 20 doubles in May 1932.

Interpreted as:

MLB most doubles by a player in a month

	NAME	2B	MONTH	G	AB	R	H	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Paul Waner P. Waner	20	May 1932	25	103	15	43	2	0	13	6	0	1	3		110	67	22	1				.417	.450	.650	1.100
2	Carlos Delgado C. Delgado	19	July 2000	27	88	21	34	0	5	21	27	2	12	0	1	117	68	24	0	0	4	1	.386	.538	.773	1.311
3	Mark Grace M. Grace	19	June 1995	28	108	18	38	0	4	21	9	1	7	1	0	119	69	23	0	1	1	0	.352	.403	.639	1.042
4	Billy Herman B. Herman	19	July 1935	34	152	36	60	2	2	25	5	2	9	3		168	89	23	9				.395	.421	.586	1.007
5	Kiki Cuyler K. Cuyler	19	August 1930	31	134	35	52	3	0	22	18	3	11	5		158	77	22	3				.388	.471	.575	1.046
6	Todd Helton T. Helton	18	August 2000	29	105	22	50	0	7	32	17	2	7	2	0	126	89	25	0	2	5	1	.476	.548	.848	1.395
7	George Brett G. Brett	18	July 1990	28	116	27	45	1	6	24	12	0	13	2	0	129	83	25	0	1	3	4	.388	.442	.716	1.157
8	Joe Medwick J. Medwick	18	September 1939	34	149	27	53	4	2	33	2	0	12	1		156	85	24	5			4	.356	.364	.570	.935
9	Joe Vosmik J. Vosmik	18	May 1937	27	119	19	40	0	1	22	6	0	5	1		125	61	19	0				.336	.368	.513	.881
10	Joe Cronin J. Cronin	18	June 1933	28	118	30	54	4	1	35	19	0	5	3		137	83	23	0				.458	.533	.703	1.236
11	Earl Webb E. Webb	18	July 1931	32	128	20	48	0	2	19	12	0	15	0		140	72	20	0				.375	.429	.563	.991
12	Chuck Klein C. Klein	18	July 1930	33	141	44	61	1	10	38	11	1	13	1		154	111	29	1				.433	.477	.787	1.264
13	Chick Hafey C. Hafey	18	July 1928	27	106	30	49	2	9	34	8	1	10	3		116	98	29	1				.462	.504	.925	1.429
14	Tristram Speaker T. Speaker	18	July 1923	33	137	35	67	4	4	37	14	0	0	1		155	105	26	4				.489	.536	.766	1.303
15	Ty Cobb T. Cobb	18	July 1922	32	137	26	67	1	2	25	12	2	5	5		154	93	21	3				.489	.536	.679	1.215
16	John Anderson J. Anderson	18	July 1901	29	123	24	52	0	3	27	5	0		11		129	79	21	1				.423	.445	.642	1.088
17	Freddie Freeman F. Freeman	17	May 2023	28	115	28	46	1	6	26	12	3	19	4	0	132	83	24	0	2	5	2	.400	.462	.722	1.184
18	Brian Roberts B. Roberts	17	June 2008	27	117	19	40	3	1	12	11	0	19	7	2	129	66	21	0	1	0	2	.342	.395	.564	.959
19	Kevin Millar K. Millar	17	September 2002	27	108	16	41	0	2	12	9	0	10	0	0	118	64	19	0	1	0	7	.380	.424	.593	1.016
20	Mike Sweeney M. Sweeney	17	May 2001	28	115	22	36	0	3	15	8	0	15	2	0	125	62	20	0	2	2	3	.313	.352	.539	.891
21	John Olerud J. Olerud	17	June 1993	28	96	17	41	0	5	30	22	1	8	0	0	122	73	22	0	3	11	2	.427	.525	.760	1.285
22	Joe Medwick J. Medwick	17	August 1936	31	130	27	52	4	2	27	4	0	5	0		134	83	23	0				.400	.418	.638	1.056
23	Goose Goslin G. Goslin	17	June 1933	23	97	29	39	3	2	18	6	0	6	2		104	68	22	1				.402	.437	.701	1.138
24	Frankie Frisch F. Frisch	17	May 1930	26	113	22	42	0	2	21	13	0	5	1		126	65	19	0				.372	.437	.575	1.012
25	Joe Dugan J. Dugan	17	September 1920	28	112	18	37	0	0	11	6	0	10	0		118	54	17	0				.330	.364	.482	.847