team with best run differential in a single season from 1930 to 1939

Between the 1930 and 1939 seasons, the New York Yankees had the highest run differential by a team in a season, with a differential of 411 runs in 1939.

	TEAM	DIFF	SEASON	G	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	411	1939	152	.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	Yankees	334	1936	155	.667	102	51	5,591	1,065	1,676	315	83	182	997	700	33	593	77	40	6,391	2,703	580	67		.300	.381	.483	.864
3	Yankees	308	1937	157	.662	102	52	5,487	979	1,554	282	73	174	921	712	34	607	60	36	6,294	2,504	529	61		.283	.369	.456	.825
4	Yankees	307	1931	155	.614	94	59	5,608	1,067	1,667	276	78	155	990	750	28	554	139	68	6,473	2,564	509	87		.297	.383	.457	.840
5	Yankees	278	1932	156	.695	107	47	5,476	1,002	1,564	279	82	160	954	765	27	526	77	66	6,344	2,487	521	76		.286	.376	.454	.830
6	Yankees	255	1938	157	.651	99	53	5,410	966	1,480	283	63	174	918	749	39	617	91	28	6,259	2,411	520	61		.274	.366	.446	.812
7	Tigers	253	1935	152	.616	93	58	5,423	918	1,573	301	83	106	841	628	19	453	70	45	6,182	2,358	490	112		.290	.366	.435	.801
8	Cubs	251	1935	154	.649	100	54	5,486	847	1,581	303	62	88	782	464	33	471	66		6,133	2,272	453	150	115	.288	.347	.414	.761
9	Tigers	251	1934	154	.656	101	53	5,471	959	1,643	349	53	74	871	636	24	526	125	55	6,232	2,320	476	101		.300	.376	.424	.800
10	Athletics	232	1931	153	.704	107	45	5,377	858	1,544	311	64	118	798	528	35	543	25	23	6,018	2,337	493	78		.287	.355	.435	.789
11	Athletics	230	1932	154	.610	94	60	5,535	981	1,606	303	52	172	923	650	21	629	37	24	6,300	2,529	527	94		.290	.367	.457	.824
12	Cardinals	220	1930	154	.597	92	62	5,512	1,004	1,732	373	89	104	942	479	28	496	72		6,204	2,595	566	185		.314	.372	.471	.843
13	Senators	205	1930	154	.610	94	60	5,369	892	1,620	297	98	57	819	533	38	438	101	68	6,113	2,284	452	173		.302	.369	.425	.794
14	Cardinals	204	1935	154	.623	96	58	5,457	829	1,548	286	59	86	762	404	19	521	71		5,977	2,210	431	97	100	.284	.335	.405	.740
15	Cardinals	201	1931	154	.656	101	53	5,435	815	1,554	353	74	60	751	432	32	475	114		5,989	2,235	487	90		.286	.342	.411	.753
16	Athletics	200	1930	154	.662	102	52	5,346	951	1,573	320	74	125	895	600	32	531	50	33	6,161	2,416	519	183		.294	.369	.452	.821
17	Yankees	186	1935	149	.597	89	60	5,214	818	1,462	255	70	104	756	604	28	469	68	46	5,917	2,169	429	71		.280	.358	.416	.774
18	Senators	186	1933	153	.651	99	53	5,521	851	1,586	281	86	60	793	537	21	396	65	50	6,209	2,219	427	130		.287	.353	.402	.755
19	Giants	177	1934	153	.608	93	60	5,396	760	1,485	240	41	126	716	406	24	526	19		5,934	2,185	407	108	102	.275	.329	.405	.734
20	Yankees	173	1934	154	.610	94	60	5,368	842	1,494	227	61	135	790	700	20	602	71	46	6,178	2,248	423	90		.278	.364	.419	.782
21	Giants	173	1931	153	.572	87	65	5,372	768	1,554	251	64	101	727	383	26	395	83		5,840	2,236	416	59		.289	.340	.416	.756
22	Reds	172	1939	156	.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
23	Yankees	165	1930	154	.558	86	68	5,447	1,062	1,683	298	110	152	985	644	19	569	91	60	6,272	2,657	560	162		.309	.384	.488	.872
24	Yankees	160	1933	152	.607	91	59	5,271	927	1,495	241	75	144	855	700	17	507	76	59	6,066	2,318	460	78		.284	.369	.440	.809
25	Senators	153	1931	156	.597	92	62	5,577	843	1,593	307	93	49	788	481	31	456	72	64	6,186	2,233	449	97		.286	.346	.400	.746