worst mlb season run differential of all-time since 1900

Since 1900, the Boston Red Sox have the lowest run differential by a team in a season, with a differential of -345 runs in 1932.

	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	Red Sox	-345	1932	154	.279	43	111	5,294	566	1,330	253	57	53	529	470	12	537	46	46	5,856	1,856	363	80				.251	.314	.351	.664
2	Athletics	-344	1915	154	.283	43	109	5,081	545	1,204	183	72	16	440	436	54	634	127	89	5,708	1,579	271	137				.237	.304	.311	.615
3	Athletics	-339	2023	162	.309	50	112	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
4	Tigers	-337	2003	162	.265	43	119	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
5	Tigers	-333	2019	161	.292	47	114	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
6	Athletics	-333	1954	156	.331	51	103	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
7	Mets	-331	1962	161	.250	40	120	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
8	Athletics	-331	1936	154	.346	53	100	5,373	714	1,443	240	60	72	663	525	19	592	59	43	5,991	2,019	372	74				.269	.336	.376	.712
9	Athletics	-329	1916	154	.235	36	117	5,010	447	1,212	169	65	19	380	406	30	631	151		5,603	1,568	253	157				.242	.303	.313	.616
10	Rockies	-327	2025	119	.261	31	88	3,994	441	945	194	29	121	430	308	35	1,125	62	30	4,371	1,560	344	14	20	5	91	.237	.296	.391	.686
11	Rustlers	-322	1911	156	.291	44	107	5,308	699	1,417	249	54	37	594	554	31	577	169		6,044	1,885	340	151				.267	.340	.355	.695
12	Tigers	-320	1996	162	.327	53	109	5,530	783	1,413	257	21	204	741	546	29	1,268	87	50	6,202	2,324	482	48	49	26	132	.256	.323	.420	.743
13	Phillies	-316	1945	154	.299	46	108	5,203	548	1,278	197	27	56	503	449	15	501	54		5,738	1,697	280	71			113	.246	.307	.326	.634
14	Athletics	-311	1939	153	.362	55	97	5,309	711	1,438	282	55	98	667	503	15	531	60	34	5,965	2,124	435	138			121	.271	.336	.400	.736
15	Phillies	-309	1942	151	.278	42	109	5,060	394	1,174	168	37	44	356	392	16	487	37		5,557	1,548	249	89			109	.232	.289	.306	.595
16	Browns	-308	1937	156	.299	46	108	5,510	715	1,573	327	44	71	682	514	14	510	30	27	6,123	2,201	442	85				.285	.348	.399	.747
17	White Sox	-306	2024	162	.253	41	121	5,383	507	1,187	226	9	133	485	395	43	1,403	90	33	5,866	1,830	368	18	27	8	116	.221	.278	.340	.618
18	Senators	-306	1904	157	.252	38	113	5,149	437	1,170	171	57	10	348	283	59	756	150		5,606	1,485	238	115				.227	.275	.288	.564
19	Phillies	-303	1939	152	.298	45	106	5,133	553	1,341	232	40	49	510	421	9	486	47		5,707	1,800	321	144			133	.261	.318	.351	.669
20	Browns	-302	1939	156	.279	43	111	5,422	733	1,453	242	50	91	696	558	20	606	48	38	6,132	2,068	383	132			121	.268	.339	.381	.720
21	Phillies	-302	1921	154	.331	51	103	5,329	617	1,512	238	50	88	573	294	25	615	66	80	5,760	2,114	376	112				.284	.324	.397	.721
22	Superbas	-301	1905	155	.316	48	104	5,100	506	1,255	154	60	29	430	327	41	606	186		5,604	1,616	243	136				.246	.297	.317	.614
23	Orioles	-297	2021	162	.321	52	110	5,420	659	1,296	266	15	195	632	451	65	1,454	54	23	5,981	2,177	476	14	31	12	105	.239	.304	.402	.705
24	Phillies	-296	1928	152	.283	43	109	5,234	660	1,396	257	47	85	606	503	21	510	53		5,917	2,002	389	159				.267	.333	.382	.716
25	Phillies	-292	1941	155	.279	43	111	5,233	501	1,277	188	38	64	467	451	22	595	65		5,796	1,733	290	90			142	.244	.307	.331	.638