The Detroit Tigers had the highest batting average by a team in 2015, with an average of .270.

	TEAM	AVG	SEASON	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	OBP	SLG	OPS
1	Tigers	.270	2015	161	.460	74	87	5,605	689	1,515	289	49	151	660	455	41	1,259	83	51	6,159	2,355	489	23	35	36	152	.328	.420	.748
2	Blue Jays	.269	2015	162	.574	93	69	5,509	891	1,480	308	17	232	852	570	54	1,151	88	23	6,231	2,518	557	36	62	12	140	.340	.457	.797
3	Royals	.269	2015	162	.586	95	67	5,575	724	1,497	300	42	139	689	383	77	973	104	34	6,116	2,298	481	34	47	28	133	.322	.412	.734
4	Giants	.267	2015	162	.519	84	78	5,565	696	1,486	288	39	136	663	457	49	1,159	93	36	6,153	2,260	463	45	37	30	142	.326	.406	.732
5	Rockies	.265	2015	162	.420	68	94	5,572	737	1,479	274	49	186	702	388	33	1,283	97	43	6,071	2,409	509	44	34	47	114	.315	.432	.748
6	Red Sox	.265	2015	162	.481	78	84	5,640	748	1,495	294	33	161	706	478	46	1,148	71	27	6,236	2,338	488	30	42	28	127	.325	.415	.740
7	Diamondbacks	.264	2015	162	.488	79	83	5,649	720	1,494	289	48	154	680	490	33	1,312	132	44	6,275	2,341	491	46	57	40	134	.324	.414	.738
8	Marlins	.260	2015	162	.438	71	91	5,463	613	1,420	236	40	120	575	375	39	1,150	112	45	5,988	2,096	396	71	40	30	133	.310	.384	.694
9	Pirates	.260	2015	162	.605	98	64	5,631	697	1,462	292	27	140	661	461	89	1,322	98	45	6,285	2,228	459	63	41	46	115	.323	.396	.719
10	Rangers	.257	2015	162	.543	88	74	5,511	751	1,419	279	32	172	707	503	76	1,233	101	39	6,187	2,278	483	43	54	32	99	.325	.413	.739
11	Indians	.256	2015	161	.503	81	80	5,439	669	1,395	303	29	141	640	533	39	1,157	86	28	6,108	2,179	473	47	50	34	134	.325	.401	.725
12	Cardinals	.253	2015	162	.617	100	62	5,484	647	1,386	288	39	137	619	506	66	1,267	69	38	6,137	2,163	464	39	42	47	128	.321	.394	.716
13	Rays	.252	2015	162	.494	80	82	5,485	644	1,383	278	32	167	612	436	84	1,310	87	45	6,071	2,226	477	19	47	22	121	.314	.406	.720
14	Brewers	.251	2015	162	.420	68	94	5,480	655	1,378	274	34	145	624	412	41	1,299	84	29	6,022	2,155	453	55	34	35	130	.307	.393	.700
15	Braves	.251	2015	162	.414	67	95	5,420	573	1,361	251	18	100	548	471	44	1,107	69	33	6,033	1,948	369	67	31	39	148	.314	.359	.674
16	Nationals	.251	2015	162	.512	83	79	5,428	703	1,363	265	13	177	665	539	44	1,344	57	23	6,117	2,185	455	55	51	38	129	.321	.403	.724
17	Yankees	.251	2015	162	.537	87	75	5,567	764	1,397	272	19	212	737	554	63	1,227	63	25	6,262	2,343	503	24	54	23	105	.323	.421	.744
18	Athletics	.251	2015	162	.420	68	94	5,600	694	1,405	277	46	146	661	475	40	1,119	78	29	6,167	2,212	469	14	38	21	124	.312	.395	.707
19	Dodgers	.250	2015	162	.568	92	70	5,385	667	1,346	263	26	187	638	563	60	1,258	59	34	6,087	2,222	476	49	30	31	135	.326	.413	.739
20	Orioles	.250	2015	162	.500	81	81	5,485	713	1,370	246	20	217	686	418	51	1,331	44	25	6,006	2,307	483	20	32	23	127	.307	.421	.728
21	Astros	.250	2015	162	.531	86	76	5,459	729	1,363	278	26	230	691	486	56	1,392	121	48	6,072	2,383	534	28	43	22	102	.315	.437	.752
22	White Sox	.250	2015	162	.469	76	86	5,533	622	1,381	260	27	136	595	404	65	1,231	68	42	6,069	2,103	423	30	37	22	125	.306	.380	.686
23	Mariners	.249	2015	162	.469	76	86	5,544	656	1,379	262	22	198	624	478	36	1,336	69	45	6,131	2,279	482	38	35	31	123	.311	.411	.722
24	Phillies	.249	2015	162	.389	63	99	5,529	626	1,374	272	37	130	586	387	54	1,274	88	32	6,052	2,110	439	53	29	20	119	.303	.382	.684
25	Reds	.248	2015	162	.395	64	98	5,571	640	1,382	257	27	167	613	496	42	1,255	134	38	6,196	2,194	451	47	40	38	112	.312	.394	.706