what is the most xbh per game by a team in a single season in mlb history

The Boston Red Sox have the most extra-base hits per game by a team in a season, with 4.01 in 2003.

	TEAM	XBH/G	XBH	G	SEASON	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Red Sox	4.01	649	162	2003	.586	95	67	5,769	961	1,667	371	40	238	932	620	53	943	88	35	6,530	2,832	24	64	61	126	.289	.360	.491	.851
2	Twins	4	648	162	2019	.623	101	61	5,732	939	1,547	318	23	307	906	525	81	1,334	28	21	6,389	2,832	10	41	21	101	.270	.338	.494	.832
3	Astros	3.94	639	162	2019	.660	107	55	5,613	920	1,538	323	28	288	891	645	66	1,166	67	27	6,391	2,781	10	57	17	146	.274	.352	.495	.848
4	Braves	3.93	236	60	2020	.583	35	25	2,074	348	556	130	3	103	338	239	23	573	23	4	2,344	1,001	1	7	13	39	.268	.349	.483	.832
5	Braves	3.85	623	162	2023	.642	104	58	5,597	947	1,543	293	23	307	916	538	67	1,289	132	27	6,247	2,803	2	43	20	128	.276	.344	.501	.845
6	Red Sox	3.83	620	162	2004	.605	98	64	5,720	949	1,613	373	25	222	912	659	69	1,189	68	30	6,515	2,702	12	55	39	123	.282	.360	.472	.832
7	Red Sox	3.81	617	162	2019	.519	84	78	5,770	901	1,554	345	27	245	857	590	49	1,382	68	30	6,473	2,688	20	44	36	127	.269	.340	.466	.806
8	Yankees	3.78	613	162	2019	.636	103	59	5,583	943	1,493	290	17	306	904	569	49	1,437	55	22	6,244	2,735	10	33	18	113	.267	.339	.490	.829
9	Indians	3.78	427	113	1994	.584	66	47	4,022	679	1,165	240	20	167	647	382	18	629	131	48	4,493	1,946	33	38	40	80	.290	.351	.484	.835
10	Mariners	3.77	607	161	1996	.528	85	76	5,668	993	1,625	343	19	245	954	670	75	1,052	90	39	6,517	2,741	46	58	57	121	.287	.366	.484	.850
11	Yankees	3.74	580	155	1936	.667	102	51	5,591	1,065	1,676	315	83	182	997	700	33	593	77	40	6,391	2,703	67				.300	.381	.483	.864
12	Rangers	3.73	605	162	2008	.488	79	83	5,728	901	1,619	376	35	194	867	595	63	1,207	81	25	6,477	2,647	37	54	43	117	.283	.354	.462	.816
13	Astros	3.73	604	162	2017	.623	101	61	5,611	896	1,581	346	20	238	854	509	70	1,087	98	42	6,262	2,681	11	61	27	139	.282	.346	.478	.823
14	Dodgers	3.71	601	162	2019	.654	106	56	5,493	886	1,414	302	20	279	861	607	81	1,356	57	10	6,281	2,593	55	45	47	100	.257	.338	.472	.810
15	Rangers	3.7	600	162	2005	.488	79	83	5,716	865	1,528	311	29	260	834	495	48	1,112	67	15	6,300	2,677	9	32	20	123	.267	.329	.468	.798
16	Rockies	3.69	598	162	2001	.451	73	89	5,690	923	1,663	324	61	213	874	511	61	1,027	132	54	6,393	2,748	81	50	50	116	.292	.354	.483	.837
17	Blue Jays	3.69	597	162	2010	.525	85	77	5,495	755	1,364	319	21	257	732	471	55	1,164	58	20	6,071	2,496	16	34	25	114	.248	.312	.454	.766
18	Mariners	3.69	597	162	1997	.556	90	72	5,614	925	1,574	312	21	264	890	626	49	1,110	89	40	6,384	2,720	46	49	53	146	.280	.355	.485	.839
19	Dodgers	3.68	221	60	2020	.717	43	17	2,042	349	523	97	6	118	327	228	30	471	29	8	2,315	986	3	12	7	46	.256	.338	.483	.821
20	Cardinals	3.68	566	154	1930	.597	92	62	5,512	1,004	1,732	373	89	104	942	479	28	496	72		6,204	2,595	185				.314	.372	.471	.843
21	Rangers	3.67	595	162	2001	.451	73	89	5,685	890	1,566	326	23	246	844	548	75	1,093	97	32	6,388	2,676	25	55	27	131	.275	.344	.471	.815
22	Red Sox	3.67	594	162	2018	.667	108	54	5,623	876	1,509	355	31	208	829	569	55	1,253	125	31	6,302	2,550	7	48	38	130	.268	.339	.453	.792
23	Blue Jays	3.66	593	162	2000	.512	83	79	5,677	861	1,562	328	21	244	826	526	60	1,026	89	34	6,326	2,664	29	34	32	130	.275	.341	.469	.810
24	Red Sox	3.65	591	162	2010	.549	89	73	5,646	818	1,511	358	22	211	782	587	47	1,140	68	17	6,355	2,546	29	46	43	130	.268	.339	.451	.790
25	Red Sox	3.64	590	162	2011	.556	90	72	5,710	875	1,600	352	35	203	842	578	50	1,108	102	42	6,410	2,631	22	50	52	136	.280	.349	.461	.810