Ned Williamson has the most doubles per game with 30+ games played in a season, with 0.5 in 1883.

Interpreted as:

most 2b/games by a player in a season 30+ gp

	NAME	2B/G	G	2B	SEASON	TM	AB	R	H	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Ned Williamson N. Williamson	0.5	98	49	1883	CWS	402	83	111	5	2	59	22		48			424	176	56					.276		.438		80	16.6	.334	111	7.8
2	Todd Hollandsworth T. Hollandsworth	0.45	33	15	2001	COL	117	21	43	1	6	19	8	0	20	5	0	125	78	22	0	0	2	1	.368	.408	.667	1.075	28	12.6	.447	153	8.7
3	Earl Webb E. Webb	0.44	151	67	1931	BSA	589	96	196	3	14	103	70	0	51	2	2	660	311	84	1				.333	.404	.528	.932	125	43.8	.422	142	37.8
4	King Kelly K. Kelly	0.44	84	37	1882	CWS	377	81	115	4	1	55	10		27			387	163	42					.305		.432		73	18.9	.339	126	14.6
5	Emil Gross E. Gross	0.44	57	25	1883	PHN	231	39	71	7	1	25	12		18			243	113	33					.307		.489		53	16	.367	135	13.8
6	Jose Iglesias J. Iglesias	0.44	39	17	2020	BAL	142	16	53	0	3	24	3	4	17	0	0	150	79	20	0	1	0	1	.373	.400	.556	.956	30	11.1	.407	160	11.1
7	Larry Walker L. Walker	0.43	103	44	1994	MON	395	76	127	2	19	86	47	4	74	15	5	452	232	65	0	6	5	8	.322	.394	.587	.981	88	30.7	.414	149	28.6
8	George Burns G. Burns	0.42	151	64	1926	CLE	603	97	216	3	4	115	28	8	33	13	7	657	298	71	18				.358	.394	.494	.889	113	33.6	.410	128	24.6
9	Ed Delahanty E. Delahanty	0.42	116	49	1895	PHI	480	149	194	10	11	106	86	6	31	46		578	296	70	6				.404	.500	.617	1.117	174	78.7	.510	177	76.8
10	Dominic Smith D. Smith	0.42	50	21	2020	NYM	177	27	56	1	10	42	14	5	45	0	0	199	109	32	0	3	0	2	.316	.377	.616	.993	40	15.5	.412	166	16.7
11	Tip O'Neill T. O'Neill	0.42	124	52	1887	STL	517	167	225	19	14	123	50	5	20	30		572	357	85					.435	.490	.691	1.180	191	96.4	.525	190	88.9
12	Dan Brouthers D. Brouthers	0.42	98	41	1883	BUF	425	85	159	17	3	97	16		17			441	243	61					.374		.572		117	50.2	.426	161	43.7
13	Jocko Milligan J. Milligan	0.42	72	30	1889	STL	273	53	100	2	12	76	16	3	19	2		292	170	44					.366	.408	.623	1.030	77	32	.466	158	27
14	Joe Medwick J. Medwick	0.41	155	64	1936	SLN	636	115	223	13	18	138	34	4	33	3		677	367	95	3			14	.351	.387	.577	.964	134	44.9	.429	151	44.5
15	Chuck Knoblauch C. Knoblauch	0.41	109	45	1994	MIN	445	85	139	3	5	51	41	10	56	35	6	499	205	53	0	3	2	13	.312	.381	.461	.841	79	15.4	.370	117	11.2
16	Hank Greenberg H. Greenberg	0.41	153	63	1934	DET	593	118	201	7	26	139	63	2	93	9	5	667	356	96	9				.339	.404	.600	1.005	140	56.3	.446	152	48.3
17	Gee Walker G. Walker	0.41	134	55	1936	DET	550	105	194	5	12	93	23	8	30	17	8	589	295	72	8				.353	.387	.536	.924	110	32.6	.416	123	20.7
18	Hugh Duffy H. Duffy	0.41	125	51	1894	BSN	539	160	237	16	18	145	66	1	15	48		616	374	85	10				.440	.502	.694	1.196	203	91.3	.526	169	80.7
19	Nick Markakis N. Markakis	0.41	37	15	2020	ATL	130	15	33	0	1	15	10	1	23	0	1	141	51	16	0	0	0	5	.254	.312	.392	.704	16	-1.5	.307	88	-2.2
20	Paul Waner P. Waner	0.4	154	62	1932	PIT	630	107	215	10	8	82	56	2	24	13		697	321	80	9				.341	.397	.510	.906	127	39.7	.407	143	38.6
21	Nap Lajoie N. Lajoie	0.4	87	35	1902	TOT	352	81	133	5	7	65	19	6	7	20		385	199	47	8				.378	.419	.565	.984	84	38.9	.461	162	32.6
22	Jorge Cantu J. Cantu	0.4	50	20	2004	TBD	173	25	52	1	2	17	9	2	44	0	0	185	80	23	0	1	0	5	.301	.341	.462	.803	25	2.5	.346	109	2.1
23	Billy Taylor B. Taylor	0.4	73	29	1884	TOT	297	52	96	3	3		9	1				307	140	35					.323	.345	.471	.817	66	21.2	.368	150	21.8
24	Joey Votto J. Votto	0.4	111	44	2012	CIN	374	59	126	0	14	56	94	5	85	5	3	475	212	58	0	2	18	8	.337	.474	.567	1.041	101	47	.438	178	44.1
25	Earle Brucker E. Brucker	0.4	53	21	1938	PHA	171	26	64	1	3	35	19	0	16	1	1	191	96	25	1				.374	.437	.561	.998	41	16.8	.452	144	12.3