who has the highest batting average in a season with at least 300 ab

Hugh Duffy has the highest batting average with 300+ at-bats in a season, with an average of .440 in 1894.

	NAME	AVG	AB	SEASON	TM	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	GIDP	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Hugh Duffy H. Duffy	.440	539	1894	BSN	125	160	237	51	16	18	145	66	1	15	48		616	374	85	10		.502	.694	1.196	203	91.3	.526	169	80.7
2	Tip O'Neill T. O'Neill	.435	517	1887	STL	124	167	225	52	19	14	123	50	5	20	30		572	357	85			.490	.691	1.180	191	96.4	.525	190	88.9
3	Ross Barnes R. Barnes	.429	322	1876	CWS	66	126	138	21	14	1	59	20		8			342	190	36				.590		105	53.2	.478	197	50.5
4	Nap Lajoie N. Lajoie	.426	544	1901	PHA	131	145	232	48	14	14	125	24	13	9	27		582	350	76	1		.463	.643	1.106	157	81	.506	186	71.5
5	Willie Keeler W. Keeler	.424	564	1897	BAL	129	145	239	27	19	0	74	35	7	5	64		618	304	46	12		.464	.539	1.003	155	61.5	.470	159	57.2
6	Rogers Hornsby R. Hornsby	.424	536	1924	SLN	143	121	227	43	14	25	94	89	2	32	5	12	640	373	82	13		.507	.696	1.203	175	96.7	.537	221	95.9
7	George Sisler G. Sisler	.420	586	1922	SLA	142	134	246	42	18	8	105	49	3	14	51	19	654	348	68	16		.467	.594	1.061	152	70.1	.481	170	61.2
8	Ty Cobb T. Cobb	.420	591	1911	DET	146	147	248	47	24	8	127	44	8	43	83		654	367	79	11		.467	.621	1.088	160	82.2	.506	189	74
9	Tuck Turner T. Turner	.418	347	1894	PHI	82	95	145	21	9	1	84	24	2	13	11		382	187	31	9		.458	.539	.997	100	31.1	.460	139	28
10	Sam Thompson S. Thompson	.415	451	1894	PHI	102	114	187	32	28	13	147	41	1	13	27		501	314	73	8		.465	.696	1.161	153	62.8	.504	162	58.7
11	Fred Dunlap F. Dunlap	.412	449	1884	SLU	101	160	185	39	8	13		29					478	279	60				.621		143	73.6	.477	215	77.7
12	Ed Delahanty E. Delahanty	.410	581	1899	PHI	146	135	238	55	9	9	137	55	4	22	30		645	338	73	5		.464	.582	1.046	164	74.8	.488	177	72.6
13	Jesse Burkett J. Burkett	.410	586	1896	CLE	133	160	240	27	16	6	72	49	7	19	34		647	317	49	5		.461	.541	1.002	163	63.9	.468	154	56.2
14	Ty Cobb T. Cobb	.409	553	1912	DET	140	120	226	30	23	7	83	43	5	30	61	34	609	323	60	8		.456	.584	1.040	140	67.5	.485	188	65
15	Joe Jackson J. Jackson	.408	571	1911	CLE	147	126	233	45	19	7	83	56	8	43	41		641	337	71	6		.468	.590	1.058	151	75.1	.494	184	68.6
16	George Sisler G. Sisler	.407	631	1920	SLA	154	137	257	49	18	19	122	46	2	19	42	17	692	399	86	13		.449	.632	1.082	161	82.5	.494	176	68.6
17	Ted Williams T. Williams	.406	456	1941	BSA	143	135	185	33	3	37	120	147	3	27	2	4	606	335	73	0	10	.553	.735	1.287	179	108.8	.568	221	96.9
18	Jesse Burkett J. Burkett	.405	555	1895	CLE	132	153	225	22	13	5	83	74	8	32	41		644	288	40	7		.482	.519	1.001	172	65.6	.473	152	57.2
19	Ed Delahanty E. Delahanty	.404	480	1895	PHI	116	149	194	49	10	11	106	86	6	31	46		578	296	70	6		.500	.617	1.117	174	78.7	.510	177	76.8
20	Ed Delahanty E. Delahanty	.404	495	1894	PHI	116	148	200	39	19	4	133	60	7	16	21		567	289	62	5		.475	.584	1.059	161	58.3	.481	150	53.8
21	Billy Hamilton B. Hamilton	.403	558	1894	PHI	132	198	225	25	15	4	90	128	9	19	100		702	292	44	7		.521	.523	1.044	209	81.9	.495	157	76.2
22	Rogers Hornsby R. Hornsby	.403	504	1925	SLN	138	133	203	41	10	39	143	83	2	39	5	3	605	381	90	16		.489	.756	1.245	173	94.1	.540	208	90.1
23	Harry Heilmann H. Heilmann	.403	524	1923	DET	144	121	211	44	11	18	115	74	5	40	9	7	626	331	73	23		.481	.632	1.113	155	78	.503	189	73.3
24	Pete Browning P. Browning	.402	547	1887	LOU	134	137	220	35	16	4	118	55	8	39	103		610	299	55			.464	.547	1.011	172	71.3	.465	161	64.3
25	Rogers Hornsby R. Hornsby	.401	623	1922	SLN	154	141	250	46	14	42	152	65	1	50	17	12	704	450	102	15		.459	.722	1.181	186	97.8	.520	197	92.7