worst run differential in a mlb season by a team over.525 since 1901

Since 1901, the Seattle Mariners have the lowest run differential by a team in a season, with a differential of -51 runs in 2021.

Interpreted as:

worst run differential in a MLB season by a team over.525 WIN% since 1901

	TEAM	DIFF	W%	SEASON	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	Mariners	-51	.556	2021	90	72	162	5,355	697	1,209	233	11	199	673	535	72	1,492	64	24	6,007	2,061	443	9	36	8	92	.226	.303	.385	.688
2	Mets	-50	.532	1972	83	73	156	5,135	528	1,154	175	31	105	490	589	34	990	41	41	5,883	1,706	311	86	39	70	127	.225	.307	.332	.639
3	Cardinals	-36	.539	1917	82	70	154	5,083	531	1,271	159	93	26	436	359	24	652	159		5,626	1,694	278	160				.250	.303	.333	.636
4	Mariners	-34	.549	2018	89	73	162	5,513	677	1,402	256	32	176	644	430	70	1,221	79	37	6,083	2,250	464	29	41	17	128	.254	.314	.408	.722
5	Astros	-31	.534	2008	86	75	161	5,451	712	1,432	284	22	167	684	449	52	1,051	114	52	6,050	2,261	473	57	41	42	116	.263	.323	.415	.737
6	Indians	-25	.526	1930	81	73	154	5,439	890	1,654	356	60	72	830	481	26	460	51	47	6,120	2,346	488	174				.304	.363	.431	.795
7	Mets	-24	.556	1984	90	72	162	5,438	652	1,400	235	25	107	607	500	20	1,001	149	54	6,066	2,006	367	59	49	73	132	.257	.320	.369	.689
8	Robins	-24	.526	1915	80	72	154	5,120	536	1,268	165	75	14	449	313	27	496	131	126	5,635	1,625	254	175				.248	.295	.317	.612
9	Astros	-22	.531	1989	86	76	162	5,516	647	1,316	239	28	97	598	530	27	860	144	62	6,200	1,902	364	83	44	62	80	.239	.306	.345	.651
10	White Sox	-21	.532	1943	82	72	155	5,254	573	1,297	193	46	33	508	561	22	582	173	87	5,909	1,681	272	72			110	.247	.322	.320	.642
11	Indians	-21	.533	1929	81	71	152	5,191	717	1,521	290	79	62	682	447	26	348	75	86	5,873	2,155	431	209				.293	.352	.415	.767
12	Diamondbacks	-20	.556	2007	90	72	162	5,398	712	1,350	286	40	171	687	532	57	1,111	109	24	6,100	2,229	497	55	58	38	121	.250	.321	.413	.734
13	Mariners	-19	.543	2007	88	74	162	5,684	794	1,629	284	22	153	754	389	62	861	81	30	6,208	2,416	459	33	40	32	154	.287	.337	.425	.762
14	Giants	-14	.537	1982	87	75	162	5,499	673	1,393	213	30	133	631	607	17	915	130	56	6,227	2,065	376	59	45	70	131	.253	.327	.376	.703
15	Phillies	-13	.528	1965	85	76	162	5,528	654	1,380	205	53	144	608	494	36	1,091	46	32	6,172	2,123	402	75	39	60	115	.250	.313	.384	.697
16	Blue Jays	-10	.533	2020	32	28	60	2,023	302	516	104	4	88	288	203	12	508	33	6	2,260	892	196	8	14	4	39	.255	.325	.441	.766
17	Pirates	-10	.558	1932	86	68	154	5,421	701	1,543	274	90	48	653	358	31	385	71		5,906	2,141	412	96				.285	.333	.395	.727
18	Giants	-9	.556	1997	90	72	162	5,485	784	1,415	266	37	172	746	642	46	1,120	121	49	6,296	2,271	475	64	59	72	111	.258	.337	.414	.751
19	Browns	-9	.536	1925	82	71	154	5,435	898	1,620	304	68	110	798	497	31	373	85	78	6,106	2,390	482	143				.298	.360	.440	.800
20	Browns	-9	.526	1921	81	73	154	5,446	835	1,651	246	105	67	720	415	37	402	91	71	6,103	2,308	418	205				.303	.357	.424	.780
21	Giants	-8	.531	2011	86	76	162	5,486	570	1,327	282	24	121	534	448	52	1,122	85	51	6,091	2,020	427	62	43	47	117	.242	.303	.368	.671
22	Orioles	-8	.562	1981	59	46	105	3,516	429	883	165	11	88	408	404	15	454	41	34	3,985	1,334	264	26	24	29	110	.251	.329	.379	.708
23	Guardians	-6	.543	2025	88	74	162	5,310	643	1,199	243	18	168	621	494	60	1,344	129	34	5,942	1,982	429	28	50	30	78	.226	.296	.373	.670
24	Phillies	-6	.526	1949	81	73	154	5,307	662	1,349	232	55	122	622	528	26	670	27		5,935	2,057	409	74			116	.254	.325	.388	.712
25	Athletics	-6	.545	1948	84	70	154	5,181	729	1,345	231	47	68	684	725	22	523	40	32	6,048	1,874	346	120			137	.260	.353	.362	.715