Hal Deviney, Dud Lee and Allie Watt were tied for the highest batting average in a decade in 1920, with an average of 1.000 in the 1920s.

Interpreted as:

highest batting average by a player in 1920 decade

	NAME	AVG	DECADE	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Hal Deviney H. Deviney	1.000	1920s	1	2	1	2	0	1	0	0	0	0	0	0	0	2	4	1	0	1.000	2.000	3.000	2	1.5	1.326	659	1.5
2	Dud Lee D. Lee	1.000	1920s	1	2	2	2	0	0	0	1	0	0	0	1	0	3	2	0	1	1.000	1.000	2.000	2	1.4	.945	434	1.3
3	Allie Watt A. Watt	1.000	1920s	1	1	0	1	1	0	0	1	0	0	0	0	0	1	2	1	0	1.000	2.000	3.000	1	0.8	1.346	669	0.7
4	Joe Boehling J. Boehling	.500	1920s	3	4	0	2	0	0	0	0	0	1	0	0	0	5	2	0	0	.600	.500	1.100	1	0.7	.532	198	0.6
5	John Slappey J. Slappey	.500	1920s	3	2	1	1	1	0	0	0	0	0	0	0	0	2	2	1	0	.500	1.000	1.500	1	0.5	.673	277	0.5
6	Monty Swartz M. Swartz	.500	1920s	1	4	0	2	0	0	0	0	0	0	0	0	0	4	2	0	0	.500	.500	1.000	1	0.4	.472	201	0.4
7	Dick Niehaus D. Niehaus	.444	1920s	19	9	0	4	0	0	0	1	2	0	3	0	0	11	4	0	0	.545	.444	.990	2	1.2	.478	167	1
8	Dutch Wetzel D. Wetzel	.429	1920s	7	21	5	9	1	1	0	5	4	0	1	0	1	26	12	2	1	.520	.571	1.091	6	3.3	.505	182	2.8
9	George Sisler G. Sisler	.407	1920s	154	631	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
10	Pat Martin P. Martin	.400	1920s	8	10	1	4	1	0	0	0	0	0	3	0	0	12	5	1	2	.400	.500	.900	2	0.7	.418	131	0.5
11	Jack Sheehan J. Sheehan	.400	1920s	3	5	0	2	1	0	0	0	1	0	0	0	0	6	3	1	0	.500	.600	1.100	1	0.8	.505	217	0.8
12	Tristram Speaker T. Speaker	.388	1920s	150	552	137	214	50	11	8	107	97	5	13	10	13	674	310	69	20	.483	.562	1.045	152	74.9	.483	170	62
13	Doc Prothro D. Prothro	.385	1920s	6	13	2	5	0	0	0	2	0	0	4	0	0	13	5	0	0	.385	.385	.769	2	0.3	.363	106	0.1
14	Zack Taylor Z. Taylor	.385	1920s	9	13	3	5	2	0	0	5	0	0	2	0	1	13	7	2	0	.385	.538	.923	2	0.9	.425	163	0.9
15	Joe Jackson J. Jackson	.382	1920s	146	570	105	218	42	20	12	121	56	7	14	9	12	649	336	74	16	.444	.589	1.033	141	67.4	.474	167	56.5
16	Babe Ruth B. Ruth	.376	1920s	142	458	158	172	36	9	54	135	150	3	80	14	14	616	388	99	5	.532	.847	1.379	191	120.9	.597	237	110.5
17	Lymon Lamb L. Lamb	.375	1920s	9	24	4	9	2	0	0	4	0	0	7	2	0	27	11	2	3	.375	.458	.833	4	1.1	.388	115	0.5
18	Eddie Collins E. Collins	.372	1920s	153	602	117	224	38	13	3	76	69	2	19	20	8	706	297	54	33	.438	.493	.932	133	53.1	.435	145	41.2
19	Rogers Hornsby R. Hornsby	.370	1920s	149	589	96	218	44	20	9	94	60	3	50	12	15	660	329	73	8	.431	.559	.990	135	59.4	.455	187	63.2
20	Fred Nicholson F. Nicholson	.360	1920s	99	247	33	89	16	7	4	30	18	0	31	9	6	271	131	27	6	.404	.530	.934	50	19.4	.431	167	20.1
21	Ben Paschal B. Paschal	.357	1920s	9	28	5	10	0	0	0	5	5	0	2	1	0	33	10	0	0	.455	.357	.812	5	1.6	.398	128	1.2
22	Baby Doll Jacobson B. Doll Jacobson	.355	1920s	154	609	97	216	34	14	9	122	46	2	37	11	7	673	305	57	16	.402	.501	.903	119	42.3	.419	133	28.7
23	Ross Youngs R. Youngs	.351	1920s	153	581	92	204	27	14	6	78	75	2	55	18	18	671	277	47	13	.427	.477	.904	121	44.5	.423	165	48.3
24	Joe Evans J. Evans	.349	1920s	56	172	32	60	9	9	0	23	15	1	3	6	2	189	87	18	1	.404	.506	.910	34	12.1	.420	134	8.5
25	Walt Kinney W. Kinney	.346	1920s	14	26	5	9	1	0	0	6	2	0	1	0	0	28	10	1	0	.393	.385	.777	4	0.8	.371	104	0.2