worst run differential in a mlb season by a team over.538 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.538 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	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	Astros	1	.549	1979	89	73	162	5,394	583	1,382	224	52	49	542	461	22	745	190	95	6,029	1,857	325	109	43	75	105	.256	.315	.344	.659
13	Cardinals	1	.565	1936	87	67	155	5,537	795	1,554	332	60	88	733	442	15	577	69		6,065	2,270	480	71			125	.281	.336	.410	.745
14	Brewers	3	.549	2019	89	73	162	5,542	769	1,366	279	17	250	744	629	72	1,563	101	25	6,301	2,429	546	20	38	42	120	.246	.329	.438	.767
15	Royals	3	.543	1973	88	74	162	5,508	755	1,440	239	40	114	703	644	26	696	105	69	6,274	2,101	393	49	47	44	134	.261	.339	.381	.720
16	Pirates	5	.539	1948	83	71	156	5,286	706	1,388	191	54	108	650	580	21	578	68		5,943	2,011	353	56			100	.263	.338	.380	.718
17	Orioles	7	.574	2012	93	69	162	5,560	712	1,375	270	16	214	677	480	50	1,315	58	29	6,158	2,319	500	38	30	24	152	.247	.311	.417	.728
18	Naps	7	.559	1907	85	67	158	5,068	530	1,222	182	68	11	433	335	56	677	193		5,636	1,573	261	177				.241	.295	.310	.606
19	Rangers	8	.586	2016	95	67	162	5,525	765	1,446	257	23	215	746	436	70	1,220	99	36	6,089	2,394	495	18	40	23	114	.262	.322	.433	.755
20	Phillies	10	.549	1982	89	73	162	5,454	664	1,417	245	25	112	624	506	24	831	128	76	6,107	2,048	382	85	38	66	134	.260	.323	.376	.699
21	Reds	11	.553	1985	89	72	162	5,431	677	1,385	249	34	114	634	576	23	856	159	70	6,143	2,044	397	72	41	72	136	.255	.327	.376	.703
22	Browns	12	.574	1902	78	58	140	4,736	619	1,254	208	61	29	520	373	38	324	137		5,251	1,671	298	104				.265	.323	.353	.676
23	Cardinals	16	.556	2014	90	72	162	5,426	619	1,371	275	21	105	585	471	86	1,133	57	32	6,086	2,003	401	64	39	28	140	.253	.320	.369	.689
24	Padres	16	.549	1989	89	73	162	5,422	642	1,360	215	32	120	598	552	9	1,013	136	67	6,119	1,999	367	95	41	79	115	.251	.319	.369	.688
25	Terrapins	17	.545	1914	84	70	160	5,120	645	1,374	222	67	32	551	487	46	565	152		5,834	1,826	321	181				.268	.337	.357	.694