which mlb team had the worst season run differential while finishing with a winning record

The Cleveland Spiders have the lowest run differential by a team in a season, with a differential of -723 runs in 1899.

	TEAM	DIFF	W	REC	SEASON	L	W%	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	Spiders	-723	20	20-134	1899	134	.130	154	5,279	529	1,333	142	50	12	454	289	65	280	127		5,690	1,611	204	57				.253	.299	.305	.605
2	Alleghenys	-638	23	23-113	1890	113	.169	138	4,739	597	1,088	160	43	20	426	408	66	460	208		5,213	1,394	223					.230	.300	.294	.594
3	Browns	-496	29	29-102	1897	102	.221	133	4,673	592	1,285	151	67	32	496	354	76	314	172		5,183	1,666	250	80				.275	.336	.357	.693
4	Colonels	-459	27	27-111	1889	111	.196	140	4,955	632	1,249	170	75	22	503	320	41	521	203		5,316	1,635	267					.252	.303	.330	.633
5	Quakers	-450	17	17-81	1883	81	.173	99	3,576	437	859	181	48	3	299	141		355			3,717	1,145	232					.240		.320
6	Rockies	-424	43	43-119	2025	119	.265	162	5,408	597	1,281	253	37	160	581	395	48	1,531	87	39	5,907	2,088	450	21	35	5	118	.237	.293	.386	.679
7	Bisons	-406	36	36-96	1890	96	.273	134	4,795	793	1,249	180	64	20	630	541	96	367	160		5,432	1,617	264					.260	.347	.337	.684
8	Colonels	-392	35	35-96	1895	96	.267	133	4,724	698	1,320	171	73	34	574	346	77	323	156		5,205	1,739	278	58				.279	.339	.368	.707
9	Spiders	-383	39	39-92	1887	92	.298	133	4,649	729	1,170	178	77	14	562	375	46	486	355		5,070	1,544	269					.252	.314	.332	.646
10	Cowboys	-378	30	30-91	1886	91	.248	126	4,236	494	967	177	48	19	370	269		608	96		4,505	1,297	244					.228		.306
11	Senators	-376	44	44-91	1891	91	.326	139	4,715	691	1,183	147	84	19	536	468	76	485	219		5,259	1,555	250					.251	.328	.330	.658
12	Browns	-358	39	39-111	1898	111	.260	154	5,214	571	1,290	149	55	13	470	383	84	405	104		5,798	1,588	217	117				.247	.309	.305	.614
13	Nationals	-347	28	28-92	1886	92	.233	125	4,082	445	856	135	51	23	331	265		582	143		4,347	1,162	209					.210		.285
14	Red Sox	-345	43	43-111	1932	111	.279	154	5,294	566	1,330	253	57	53	529	470	12	537	46	46	5,856	1,856	363	80				.251	.314	.351	.664
15	Athletics	-344	43	43-109	1915	109	.283	154	5,081	545	1,204	183	72	16	440	436	54	634	127	89	5,708	1,579	271	137				.237	.304	.311	.615
16	Colonels	-344	38	38-93	1896	93	.290	134	4,588	653	1,197	142	80	37	520	371	45	427	195		5,057	1,610	259	53				.261	.322	.351	.673
17	Reds	-341	9	9-56	1876	56	.138	65	2,372	238	555	51	12	4	132	41		136			2,413	642	67					.234		.271
18	Athletics	-339	50	50-112	2023	112	.309	162	5,311	585	1,187	225	21	171	563	498	85	1,496	149	31	5,958	1,967	417	28	36	12	125	.223	.298	.370	.669
19	Metropolitans	-339	44	44-89	1887	89	.331	138	4,821	754	1,197	193	66	21	549	439	50	456	305		5,310	1,585	280					.248	.318	.329	.646
20	Tigers	-337	43	43-119	2003	119	.265	162	5,466	591	1,312	201	39	153	553	443	47	1,099	98	63	6,070	2,050	393	65	49	24	114	.240	.300	.375	.675
21	Hoosiers	-337	37	37-89	1887	89	.294	127	4,368	628	1,080	162	70	33	488	300	44	379	334		4,712	1,481	265					.247	.302	.339	.641
22	Browns	-336	40	40-90	1896	90	.308	131	4,520	593	1,162	134	78	37	487	332	35	300	185		4,988	1,563	249	101				.257	.313	.346	.659
23	Tigers	-333	47	47-114	2019	114	.292	161	5,549	582	1,333	292	41	149	556	391	48	1,595	57	20	6,039	2,154	482	9	42	14	108	.240	.294	.388	.682
24	Athletics	-333	51	51-103	1954	103	.331	156	5,206	542	1,228	191	41	94	503	504	28	677	30	29	5,823	1,783	326	54	31		106	.236	.305	.342	.648
25	Mets	-331	40	40-120	1962	120	.250	161	5,492	617	1,318	166	40	139	573	616	32	991	59	48	6,242	1,981	345	58	44	29	122	.240	.318	.361	.679