what mlb team has the highest all-time winning percentage

The Milwaukee Brewers have the highest winning percentage by a team, winning 66.7 percent of the time.

	TEAM	W%	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Brewers	.667	8	4	12	395	53	88	25	0	0		20		70			415	113	25					.223		.286
2	Reds	.659	174	90	269	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
3	Outlaw Reds	.657	69	36	105	3,786	703	1,027	118	63	26		147		482			3,933	1,349	207					.271		.356
4	Browns	.644	781	432	1,233	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
5	Dark Blues	.619	78	48	129	5,022	770	1,348	159	53	6		69					5,091	1,631	218					.268		.325
6	Grays	.612	438	278	725	26,572	4,037	6,764	1,084	341	98	292	1,192					27,764	8,824	1,523					.255		.332
7	Brown Stockings	.589	73	51	124	4,656	670	1,173	124	63	3		116					4,772	1,432	190					.252		.308
8	Brewers	.583	21	15	36	1,271	227	332	58	15	13	165	107	29	114	47		1,407	459	86					.261	.333	.361	.694
9	Orioles	.579	730	530	1,294	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
10	Ward's Wonders	.576	76	56	133	4,887	964	1,352	186	93	34	748	502	42	369	272		5,431	1,826	313					.277	.349	.374	.723
11	Yankees	.569	10,842	8,205	19,135	652,143	92,979	173,076	28,746	5,505	17,432	86,404	68,859	4,947	95,472	11,705	2,815	738,853	265,128	51,683	9,600	3,304	2,859	10,732	.265	.339	.407	.745
12	Whales	.565	173	133	312	10,231	1,262	2,634	412	127	102	1,102	964	71	1,200	332		11,614	3,606	641	348				.257	.326	.352	.678
13	Giants	.565	74	57	132	4,913	1,018	1,393	204	97	66	793	486	31	364	231		5,430	1,989	367					.284	.352	.405	.757
14	Monumentals	.552	58	47	106	3,883	662	952	150	26	17		144		652			4,027	1,205	193					.245		.310
15	Peppers	.551	168	137	312	10,273	1,347	2,757	440	170	50	1,116	908	72	1,160	457		11,678	3,687	660	425				.268	.332	.359	.691
16	Pirates	.547	75	62	138	4,968	886	1,311	200	95	31	705	492	43	410	276		5,503	1,794	326					.264	.335	.361	.697
17	Giants	.535	11,600	10,081	21,844	745,440	100,942	195,997	31,454	7,053	15,651	90,404	68,544	5,711	100,198	16,543	3,151	834,413	288,510	54,158	11,680	3,038	4,023	10,234	.263	.328	.387	.716
18	Reds	.532	58	51	111	3,940	636	928	168	32	19		128		787			4,068	1,217	219					.236		.309
19	Dodgers	.532	11,500	10,120	21,759	741,401	98,265	193,681	31,171	7,012	14,234	88,475	69,166	5,176	100,972	17,381	3,561	831,679	281,578	52,417	12,778	3,082	3,751	9,989	.261	.327	.380	.707
20	Athletics	.529	633	564	1,219	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
21	Athletics	.519	68	63	132	4,855	941	1,350	187	113	49	761	431	51	321	203		5,337	1,910	349					.278	.343	.393	.737
22	Red Sox	.518	10,021	9,319	19,423	664,753	90,746	177,351	33,280	5,612	14,692	84,166	67,041	4,842	96,212	9,688	2,568	750,596	265,931	53,584	10,601	3,359	3,007	11,594	.267	.337	.400	.737
23	Grays	.516	65	61	130	4,925	619	1,300	143	50	15		82					5,007	1,588	208					.264		.322
24	Maumees	.515	68	64	134	4,575	739	1,152	152	108	24	512	486	71		421		5,132	1,592	284					.252	.333	.348	.681
25	Cubs	.513	11,395	10,818	22,374	765,658	103,024	200,489	33,862	7,369	15,353	88,601	68,790	5,304	105,596	15,860	3,083	855,710	295,148	56,584	13,029	2,929	3,525	9,991	.262	.326	.385	.711