highest run differential per game in an mlb season from 1776 to 1939

The New York Yankees had the highest run differential per game by a team in 1939, with 2.7.

	TEAM	DIFF/G	DIFF	G	SEASON	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	GIDP	AVG	OBP	SLG	OPS
1	Yankees	2.7	411	152	1939	.702	106	45	5,300	967	1,521	259	55	166	904	701	36	543	72	37	6,129	2,388	480	92	99	.287	.374	.451	.825
2	Reds	1.1	172	156	1939	.630	97	57	5,378	767	1,493	269	60	98	714	500	35	538	46		6,106	2,176	427	193	110	.278	.343	.405	.748
3	Cardinals	0.94	146	155	1939	.601	92	61	5,447	779	1,601	332	62	98	732	475	27	566	44		6,116	2,351	492	167	116	.294	.354	.432	.785
4	Indians	0.63	97	154	1939	.565	87	67	5,316	797	1,490	291	79	85	730	556	14	571	72	46	6,006	2,194	455	120	110	.280	.350	.413	.763
5	Red Sox	0.63	95	152	1939	.589	89	62	5,308	890	1,543	287	57	124	832	591	15	502	42	44	6,054	2,316	468	140	146	.291	.363	.436	.800
6	Tigers	0.56	87	155	1939	.526	81	73	5,326	849	1,487	277	67	124	804	619	16	593	88	38	6,106	2,270	468	145	125	.279	.356	.426	.782
7	Dodgers	0.4	63	157	1939	.549	84	69	5,350	708	1,420	265	57	78	653	564	26	639	59		6,047	2,033	400	107	130	.265	.338	.380	.718
8	Cubs	0.29	46	156	1939	.545	84	70	5,293	724	1,407	263	62	91	671	523	34	553	61		5,990	2,067	416	140	124	.266	.336	.391	.726
9	Giants	0.14	21	151	1939	.510	77	74	5,129	703	1,395	211	38	116	651	498	32	499	26		5,767	2,030	365	108	153	.272	.340	.396	.736
10	White Sox	0.12	18	155	1939	.552	85	69	5,279	755	1,451	220	56	64	679	579	21	502	113	61	6,033	1,975	340	154	108	.275	.349	.374	.723
11	Pirates	-0.37	-57	153	1939	.444	68	85	5,269	666	1,453	261	60	63	617	477	21	420	44		5,923	2,023	384	156	128	.276	.338	.384	.722
12	Bees	-0.54	-82	152	1939	.417	63	88	5,286	572	1,395	199	39	56	534	366	21	494	41		5,795	1,840	294	122	119	.264	.314	.348	.662
13	Senators	-0.62	-95	153	1939	.428	65	87	5,334	702	1,483	249	79	44	647	547	11	458	94	47	6,026	2,022	372	134	103	.278	.346	.379	.725
14	Browns	-1.94	-302	156	1939	.279	43	111	5,422	733	1,453	242	50	91	696	558	20	606	48	38	6,132	2,068	383	132	121	.268	.339	.381	.720
15	Phillies	-1.99	-303	152	1939	.298	45	106	5,133	553	1,341	232	40	49	510	421	9	486	47		5,707	1,800	321	144	133	.261	.318	.351	.669
16	Athletics	-2.03	-311	153	1939	.362	55	97	5,309	711	1,438	282	55	98	667	503	15	531	60	34	5,965	2,124	435	138	121	.271	.336	.400	.736