which team has the biggest run differential from 1870 to 1900

Between the 1870 and 1900 seasons, the Boston Beaneaters had the highest run differential by a team, with a differential of 3,118 runs.

	TEAM	DIFF	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	AVG	OBP	SLG	OPS
1	Beaneaters	3,118	2,908	.589	1,686	1,175	104,206	17,861	28,586	4,143	1,516	903	11,113	7,718	685	3,198	3,764	113,406	38,470	6,562	797	.274	.328	.369	.698
2	Orphans	2,458	2,914	.568	1,620	1,234	103,950	18,138	28,691	4,329	1,691	998	10,530	8,010	608	3,575	4,024	113,310	39,396	7,018	742	.276	.331	.379	.710
3	Browns	2,020	1,233	.644	781	432	43,777	7,933	11,555	1,658	602	304	4,657	3,473	353	436	2,307	47,743	15,329	2,564		.264	.325	.350	.675
4	Orioles	1,512	1,294	.579	730	530	45,361	8,530	13,521	1,814	865	218	6,940	4,345	992	2,952	2,993	51,317	17,719	2,897	619	.298	.372	.391	.763
5	Reds	1,376	2,501	.546	1,340	1,112	87,514	14,668	23,291	3,167	1,627	611	10,188	6,950	717	3,119	4,376	96,106	31,545	5,405	757	.266	.326	.360	.687
6	Giants	1,313	2,401	.547	1,274	1,054	83,937	14,070	23,003	3,139	1,450	637	10,354	6,785	634	3,331	4,198	91,793	30,953	5,226	437	.274	.333	.369	.702
7	Grays	909	725	.612	438	278	26,572	4,037	6,764	1,084	341	98	292	1,192				27,764	8,824	1,523		.255		.332
8	Superbas	681	2,316	.536	1,214	1,052	80,410	13,691	21,501	3,060	1,366	489	10,435	7,078	793	3,221	4,214	88,977	28,760	4,915	620	.267	.333	.358	.691
9	Reds	578	269	.659	174	90	9,515	2,020	2,647	386	176	106	1,548	1,303	109	499	859	10,927	3,703	668		.278	.371	.389	.761
10	Phillies	543	2,365	.520	1,208	1,116	84,594	14,186	23,383	3,725	1,312	627	10,818	7,059	830	3,471	3,595	93,267	31,613	5,664	784	.276	.338	.374	.712
11	Athletics	356	1,219	.529	633	564	43,556	7,481	11,208	1,782	741	284	4,168	3,158	351	548	1,900	47,191	15,324	2,807		.257	.315	.352	.666
12	Outlaw Reds	237	105	.657	69	36	3,786	703	1,027	118	63	26		147		482		3,933	1,349	207		.271		.356
13	Dark Blues	198	129	.619	78	48	5,022	770	1,348	159	53	6		69				5,091	1,631	218		.268		.325
14	Giants	143	132	.565	74	57	4,913	1,018	1,393	204	97	66	793	486	31	364	231	5,430	1,989	367		.284	.352	.405	.757
15	Brown Stockings	123	124	.589	73	51	4,656	670	1,173	124	63	3		116				4,772	1,432	190		.252		.308
16	Pirates	116	138	.547	75	62	4,968	886	1,311	200	95	31	705	492	43	410	276	5,503	1,794	326		.264	.335	.361	.697
17	Maroons	90	351	.504	173	170	12,293	1,824	3,081	563	108	70	684	630			156	12,923	4,070	741		.251		.331
18	Wolverines	87	880	.494	426	437	31,647	4,849	8,116	1,241	537	264	2,412	1,880	84		654	33,611	11,223	2,042		.256	.300	.355	.655
19	Athletics	86	132	.519	68	63	4,855	941	1,350	187	113	49	761	431	51	321	203	5,337	1,910	349		.278	.343	.393	.737
20	Reds	78	111	.532	58	51	3,940	636	928	168	32	19		128		787		4,068	1,217	219		.236		.309
21	Brewers	71	36	.583	21	15	1,271	227	332	58	15	13	165	107	29	114	47	1,407	459	86		.261	.333	.361	.694
22	Ward's Wonders	71	133	.576	76	56	4,887	964	1,352	186	93	34	748	502	42	369	272	5,431	1,826	313		.277	.349	.374	.723
23	Maumees	50	134	.515	68	64	4,575	739	1,152	152	108	24	512	486	71		421	5,132	1,592	284		.252	.333	.348	.681
24	Monumentals	35	106	.552	58	47	3,883	662	952	150	26	17		144		652		4,027	1,205	193		.245		.310
25	Brewers	19	12	.667	8	4	395	53	88	25	0	0		20		70		415	113	25		.223		.286