highest run differential in a season including playoffs

The St. Louis Maroons have the highest run differential by a team in a combined regular-season and postseason, with a differential of 458 runs in 1884.

	TEAM	DIFF	SEASON	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Maroons	458	1884	114	.832	94	19	4,285	887	1,251	259	41	32		181		542			4,466	1,688	332					.292		.394
2	Yankees	423	1939	156	.710	110	45	5,431	987	1,548	263	56	173	922	710	36	563	72		6,271	2,442	492	94			100	.285	.371	.450	.821
3	Yankees	384	1927	159	.722	114	44	5,490	999	1,682	297	105	160	926	655	23	635	92		6,374	2,669	562	206				.306	.383	.486	.869
4	Browns	370	1887	138	.704	95	40	5,048	1,131	1,550	261	78	39	862	442	67	342	581		5,557	2,084	378					.307	.371	.413	.783
5	White Stockings	367	1876	66	.788	52	14	2,748	624	926	131	32	8	441	70		45			2,818	1,145	171					.337		.417
6	White Stockings	364	1885	113	.777	87	25	4,093	834	1,079	184	75	54	606	340		429			4,433	1,575	313					.264		.385
7	Orioles	363	1895	132	.669	87	43	4,725	1,009	1,530	235	89	25	828	355	106	243	310		5,311	2,018	349	125				.324	.384	.427	.811
8	Beaneaters	360	1897	135	.705	93	39	4,937	1,025	1,574	230	83	45	885	423	47	263	233		5,521	2,105	358	114				.319	.378	.426	.804
9	Yankees	354	1936	161	.667	106	53	5,806	1,108	1,741	323	84	189	1,038	726	34	628	78		6,636	2,799	596	70				.300	.381	.482	.863
10	Reds	353	1891	139	.689	93	42	4,889	1,028	1,341	163	100	52	776	651	66	499	447		5,606	1,860	315					.274	.367	.380	.748
11	Orioles	352	1894	129	.695	89	39	4,799	1,171	1,647	271	150	33	976	516	98	200	324		5,564	2,317	454	151				.343	.418	.483	.901
12	Browns	352	1886	139	.669	93	46	5,009	944	1,365	206	85	20	655	400	52	425	336		5,461	1,801	311					.273	.333	.360	.692
13	White Stockings	345	1886	126	.726	90	34	4,378	900	1,223	198	87	53	673	460		513	213		4,838	1,754	338					.279		.401
14	Yankees	337	1998	175	.714	125	50	6,070	1,027	1,734	309	32	221	965	715	61	1,120	165	68	6,946	2,770	562	37	63	39	159	.286	.363	.456	.820
15	Pirates	334	1902	142	.741	103	36	4,926	774	1,410	189	95	18	660	372	64	440	222		5,480	1,843	302	118				.286	.344	.374	.718
16	Orioles	333	1896	132	.698	90	39	4,719	995	1,548	207	100	23	854	386	120	201	441		5,323	2,024	330	98				.328	.393	.429	.822
17	Dodgers	331	2022	166	.675	112	54	5,658	859	1,448	336	31	216	823	621	57	1,418	100	19	6,394	2,494	583	3	55	23	86	.256	.333	.441	.773
18	Yankees	324	1937	162	.667	106	53	5,656	1,007	1,596	288	77	178	946	733	35	628	60		6,487	2,572	543	63				.282	.368	.455	.823
19	Gothams	321	1885	112	.759	85	27	4,029	691	1,085	150	82	16	464	221		312			4,250	1,447	248					.269		.359
20	Cubs	319	1906	161	.747	118	40	5,202	722	1,352	190	71	20	550	466	47	544	292		5,959	1,744	281	244				.260	.326	.335	.662
21	Metropolitans	311	1884	112	.701	75	32	4,012	734	1,052	155	64	22		203	35	315			4,250	1,401	241					.262	.304	.349	.653
22	Orioles	310	1898	154	.644	96	53	5,242	933	1,584	154	77	12	757	519	160	316	250		6,000	1,928	243	79				.302	.382	.368	.750
23	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
24	Yankees	296	1932	160	.703	111	47	5,620	1,039	1,609	285	82	168	990	788	31	552	77		6,516	2,562	535	77				.286	.377	.456	.833
25	Athletics	294	1929	156	.697	108	47	5,375	927	1,585	293	75	128	871	553	30	467	63		6,178	2,412	496	220				.295	.364	.449	.813