biggest team run differential first 12 team games of any season since 1900

Since 1900, the New York Yankees have the highest run differential by a team in a season, with a differential of 411 runs in 1939.

	TEAM	DIFF	TM GMS	SEASON	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Yankees	411	4,104	1939	1,550	5,300	967	1,521	259	55	166	904	701	36	543	72		6,129	2,388	480	92			99	.287	.374	.451	.825	935	176.3	.380	113	112
2	Yankees	371	3,875	1927	1,725	5,354	976	1,644	291	103	158	907	642	22	610	90		6,222	2,615	552	204				.307	.384	.488	.872	1031	266.6	.400	126	220.6
3	Pirates	334	3,834	1902	1,311	4,926	774	1,410	189	95	18	660	372	64	440	222		5,480	1,843	302	118				.286	.344	.374	.718	739	95.6	.346	119	118.9
4	Yankees	334	4,340	1936	1,650	5,591	1,065	1,676	315	83	182	997	700	33	593	77		6,391	2,703	580	67				.300	.381	.483	.864	1071	233	.394	113	128.5
5	Dodgers	334	8,262	2022	1,620	5,526	847	1,418	325	31	212	812	607	56	1,374	98	18	6,245	2,441	568	3	53	22	85	.257	.333	.442	.775	848	133.4	.337	120	143.3
6	Cubs	323	3,565	1906	1,482	5,018	704	1,316	181	71	20	539	448	45	516	283		5,742	1,699	272	231				.262	.328	.339	.667	651	82.5	.328	106	36.8
7	Yankees	309	6,156	1998	1,682	5,643	965	1,625	290	31	207	907	653	57	1,025	153	63	6,444	2,598	528	32	59	34	145	.288	.364	.460	.825	952	154.1	.360	116	132.3
8	Yankees	308	4,396	1937	1,633	5,487	979	1,554	282	73	174	921	712	34	607	60		6,294	2,504	529	61				.283	.369	.456	.825	961	170.9	.378	110	90.5
9	Yankees	307	4,340	1931	1,752	5,608	1,067	1,667	276	78	155	990	750	28	554	139		6,473	2,564	509	87				.297	.383	.457	.840	1043	242.6	.387	124	208.1
10	Mariners	300	5,670	2001	1,766	5,680	927	1,637	310	38	169	881	614	62	989	174	42	6,474	2,530	517	48	70	54	112	.288	.360	.445	.805	912	108.8	.347	116	128
11	Yankees	294	4,774	1942	1,596	5,305	801	1,429	223	57	108	744	591	29	556	69		6,009	2,090	388	84			103	.269	.346	.394	.740	762	122.3	.353	109	61.2
12	Athletics	285	4,832	1929	1,666	5,204	901	1,537	288	75	122	845	540	29	440	63		5,987	2,341	485	214				.295	.365	.450	.815	879	86.6	.371	108	63
13	Cardinals	282	4,239	1944	1,756	5,474	772	1,507	274	59	100	722	543	27	471	37		6,168	2,199	433	124			96	.275	.344	.402	.745	783	116	.352	109	62
14	Astros	280	7,290	2019	1,704	5,613	920	1,538	323	28	288	891	645	66	1,166	67	27	6,391	2,781	639	10	57	17	146	.274	.352	.495	.848	996	191.8	.355	124	195.2
15	Yankees	278	4,992	1932	1,712	5,476	1,002	1,564	279	82	160	954	765	27	526	77		6,344	2,487	521	76				.286	.376	.454	.830	1001	205.4	.377	119	164.7
16	Cardinals	275	4,992	1942	1,796	5,422	755	1,454	282	69	60	680	551	22	505	71		6,125	2,054	411	130			90	.268	.338	.379	.717	730	78	.342	107	45.2
17	Giants	273	3,255	1905	1,531	5,094	778	1,392	191	88	39	642	517	90	497	291		5,839	1,876	318	138				.273	.351	.368	.719	784	167.9	.350	112	85.3
18	Indians	273	5,616	1948	1,895	5,446	840	1,534	242	54	155	801	646	24	575	54		6,201	2,349	451	85			132	.282	.360	.431	.792	866	133.3	.369	114	110.1
19	Dodgers	273	7,452	2019	2,365	5,493	886	1,414	302	20	279	861	607	81	1,356	57	10	6,281	2,593	601	55	45	47	100	.257	.338	.472	.810	885	94	.338	110	79.3
20	Dodgers	269	9,882	2021	2,425	5,445	830	1,330	247	24	237	799	613	104	1,408	65	17	6,239	2,336	508	32	45	36	96	.244	.330	.429	.759	816	60.3	.327	106	44
21	Giants	268	3,634	1904	1,518	5,150	744	1,347	202	65	31	564	434	79	459	283		5,828	1,772	298	165				.262	.328	.344	.673	692	96.6	.326	107	46.4
22	Dodgers	266	4,960	1953	1,893	5,373	955	1,529	274	59	208	887	655	35	686	90	47	6,138	2,545	541	75			115	.285	.366	.474	.840	941	205.3	.379	115	122.6
23	Astros	263	6,642	2018	1,719	5,453	797	1,390	278	18	205	763	565	61	1,197	71	26	6,138	2,319	501	14	45	19	156	.255	.329	.425	.754	777	59.6	.327	110	71.6
24	Orioles	262	4,860	1969	1,981	5,518	779	1,465	234	29	175	722	634	43	806	82	45	6,328	2,282	438	74	59	62	138	.265	.343	.414	.756	805	127.9	.341	112	88.1
25	Athletics	259	4,560	1911	1,568	5,199	861	1,540	237	93	35	692	424	65	523	226		5,920	2,068	365	232				.296	.357	.398	.754	817	113.2	.362	112	88.2