Hank Greenberg had the best slugging percentage in the AL in 1940, with a slugging percentage of .670.

Interpreted as:

best slg with a minimum of 3.1 PA per team game by a player in the al in 1940

	NAME	SLG	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	GIDP	AVG	OBP	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Hank Greenberg H. Greenberg	.670	1940	DET	148	573	129	195	50	8	41	150	93	1	75	6	3	670	384	99	3	15	.340	.433	1.103	160	78.8	.482	168	62.8
2	Joe DiMaggio J. DiMaggio	.626	1940	NYY	132	508	93	179	28	9	31	133	61	3	30	1	2	572	318	68	0	16	.352	.425	1.051	128	59.2	.464	167	52.5
3	Ted Williams T. Williams	.594	1940	BSA	144	561	134	193	43	14	23	113	96	3	54	4	4	661	333	80	1	13	.344	.442	1.036	146	66.4	.461	159	53.1
4	Rudy York R. York	.583	1940	DET	155	588	105	186	46	6	33	134	89	4	88	3	2	685	343	85	4	12	.316	.410	.993	141	58.1	.441	144	41.8
5	Jimmie Foxx J. Foxx	.581	1940	BSA	144	515	106	153	30	4	36	119	101	0	87	4	7	618	299	70	2	18	.297	.412	.993	127	52.4	.441	147	39.9
6	Hal Trosky Sr. H. Trosky Sr.	.529	1940	CLE	140	522	85	154	39	4	25	93	79	4	45	1	2	608	276	68	3	5	.295	.392	.920	111	38.1	.413	141	33.9
7	Wally Judnich W. Judnich	.520	1940	SLA	137	519	97	157	27	7	24	89	54	0	71	8	5	577	270	58	4	7	.303	.368	.888	99	29.1	.398	121	16.7
8	Bob Johnson B. Johnson	.514	1940	PHA	138	512	93	137	25	4	31	103	83	4	64	8	2	600	263	60	1	20	.268	.374	.888	103	30.8	.399	124	20.1
9	Joe Gordon J. Gordon	.511	1940	NYY	155	616	112	173	32	10	30	103	52	3	57	18	8	677	315	72	6	12	.281	.340	.851	106	24.3	.379	118	16.3
10	Jim Tabor J. Tabor	.510	1940	BSA	120	459	73	131	28	6	21	81	42	0	58	14	10	505	234	55	4	5	.285	.345	.855	80	19	.382	113	8.8
11	Charlie Keller C. Keller	.508	1940	NYY	138	500	102	143	18	15	21	93	106	0	65	8	2	609	254	54	3	11	.286	.411	.919	113	39.3	.415	138	32.1
12	Joe Cronin J. Cronin	.502	1940	BSA	149	548	104	156	35	6	24	111	83	1	65	7	5	645	275	65	13	6	.285	.380	.882	110	32.4	.397	122	19.4
13	Bobby Doerr B. Doerr	.497	1940	BSA	151	595	87	173	37	10	22	105	57	0	53	10	5	658	296	69	6	16	.291	.353	.850	104	24.5	.381	112	11.2
14	Barney McCosky B. McCosky	.491	1940	DET	143	589	123	200	39	19	4	57	67	1	41	13	9	660	289	62	3	8	.340	.408	.899	118	38.4	.407	125	22.6
15	Joe Kuhel J. Kuhel	.488	1940	CWS	155	603	111	169	28	8	27	94	87	3	59	12	5	703	294	63	10	11	.280	.374	.861	116	30.9	.390	121	20.1
16	Frankie Hayes F. Hayes	.477	1940	PHA	136	465	73	143	23	4	16	70	61	1	59	9	3	529	222	43	2	13	.308	.389	.866	89	25.3	.394	122	15.8
17	Sam Chapman S. Chapman	.474	1940	PHA	134	508	88	140	26	3	23	75	46	1	96	2	6	562	241	52	7	14	.276	.337	.811	82	13.8	.365	105	3.8
18	Wally Moses W. Moses	.469	1940	PHA	142	537	91	166	41	9	9	50	75	2	44	6	4	619	252	59	5	4	.309	.396	.865	104	29.7	.394	122	18.6
19	Rip Radcliff R. Radcliff	.466	1940	SLA	150	584	83	200	33	9	7	81	47	1	20	6	4	636	272	49	4	11	.342	.392	.858	105	28.7	.391	117	15.1
20	Roy Weatherly R. Weatherly	.464	1940	CLE	135	578	90	175	35	11	12	59	27	1	26	9	8	615	268	58	9	9	.303	.335	.799	86	12	.359	109	7.7
21	Harlond Clift H. Clift	.463	1940	SLA	150	523	92	143	29	5	20	87	104	2	62	9	8	631	242	54	2	9	.273	.396	.859	106	29.8	.394	119	16.3
22	Lou Finney L. Finney	.463	1940	BSA	130	534	73	171	31	15	5	73	33	0	13	5	2	574	247	51	7	16	.320	.360	.822	86	16.9	.371	107	5.3
23	George McQuinn G. McQuinn	.460	1940	SLA	151	594	78	166	39	10	16	84	57	0	58	3	3	659	273	65	8	12	.279	.343	.802	94	14.6	.362	101	0.5
24	Taffy Wright T. Wright	.448	1940	CWS	147	581	79	196	31	9	5	88	43	2	25	4	7	627	260	45	1	9	.337	.385	.832	99	23	.380	116	13.4
25	Charlie Gehringer C. Gehringer	.447	1940	DET	139	515	108	161	33	3	10	81	101	3	17	10	0	629	230	46	10	9	.313	.428	.875	112	35.8	.406	124	20.8