The Arizona Diamondbacks had the lowest winning percentage by a team in 2014, winning 39.5 percent of the time.

	TEAM	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	Diamondbacks	.395	2014	64	98	162	5,552	615	1,379	259	47	118	573	398	43	1,165	86	33	6,085	2,086	424	56	36	31	115	.248	.302	.376	.678
2	Rockies	.407	2014	66	96	162	5,612	755	1,551	307	41	186	721	397	48	1,281	85	48	6,164	2,498	534	59	48	39	121	.276	.327	.445	.772
3	Rangers	.414	2014	67	95	162	5,460	637	1,400	260	28	111	597	417	61	1,162	105	59	6,024	2,049	399	41	45	37	148	.256	.314	.375	.689
4	Twins	.432	2014	70	92	162	5,567	715	1,412	316	27	128	675	544	53	1,329	99	36	6,233	2,166	471	25	44	29	97	.254	.324	.389	.713
5	Astros	.432	2014	70	92	162	5,447	629	1,317	240	19	163	596	495	55	1,442	122	37	6,055	2,084	422	22	36	27	122	.242	.309	.383	.692
6	Red Sox	.438	2014	71	91	162	5,551	634	1,355	282	20	123	601	535	68	1,337	63	25	6,226	2,046	425	20	52	36	138	.244	.316	.369	.684
7	Cubs	.451	2014	73	89	162	5,508	614	1,315	270	31	157	590	442	54	1,477	65	40	6,102	2,118	458	57	41	29	94	.239	.300	.385	.684
8	Phillies	.451	2014	73	89	162	5,603	619	1,356	251	27	125	584	443	55	1,306	109	26	6,197	2,036	403	59	37	42	94	.242	.302	.363	.665
9	White Sox	.451	2014	73	89	162	5,543	660	1,400	279	32	155	625	417	60	1,362	85	36	6,077	2,208	466	19	38	33	127	.253	.310	.398	.708
10	Reds	.469	2014	76	86	162	5,395	595	1,282	254	20	131	562	415	52	1,252	122	52	5,975	1,969	405	76	37	22	88	.238	.296	.365	.661
11	Padres	.475	2014	77	85	162	5,294	535	1,199	224	30	109	500	468	41	1,294	91	34	5,904	1,810	363	56	45	27	118	.226	.292	.342	.634
12	Marlins	.475	2014	77	85	162	5,538	645	1,399	254	36	122	614	501	35	1,419	58	21	6,184	2,091	412	71	39	49	143	.253	.317	.378	.694
13	Rays	.475	2014	77	85	162	5,516	612	1,361	263	24	117	586	527	66	1,124	63	27	6,205	2,023	404	43	53	31	135	.247	.317	.367	.684
14	Braves	.488	2014	79	83	162	5,468	573	1,316	240	22	123	545	472	43	1,369	95	33	6,063	1,969	385	53	27	31	121	.241	.305	.360	.665
15	Mets	.488	2014	79	83	162	5,472	629	1,306	275	19	125	602	516	54	1,264	101	34	6,145	1,994	419	59	44	42	112	.239	.308	.364	.673
16	Brewers	.506	2014	82	80	162	5,462	650	1,366	297	28	150	617	423	73	1,197	102	43	6,065	2,169	475	70	37	32	135	.250	.311	.397	.708
17	Blue Jays	.512	2014	83	79	162	5,549	723	1,435	282	24	177	690	502	41	1,151	78	21	6,167	2,296	483	35	40	27	128	.259	.323	.414	.736
18	Yankees	.519	2014	84	78	162	5,497	633	1,349	247	26	147	591	452	56	1,133	112	26	6,081	2,089	420	29	47	16	111	.245	.307	.380	.687
19	Indians	.525	2014	85	77	162	5,575	669	1,411	284	23	142	644	504	42	1,189	104	27	6,221	2,167	449	51	49	24	126	.253	.317	.389	.706
20	Mariners	.537	2014	87	75	162	5,450	634	1,328	247	32	136	600	396	60	1,232	96	42	5,975	2,047	415	35	34	33	112	.244	.300	.376	.676
21	Pirates	.543	2014	88	74	162	5,536	682	1,436	275	30	156	659	520	78	1,244	104	47	6,223	2,239	461	54	35	46	127	.259	.330	.404	.734
22	Giants	.543	2014	88	74	162	5,523	665	1,407	257	42	132	636	427	43	1,245	56	27	6,087	2,144	431	45	49	37	113	.255	.311	.388	.699
23	Athletics	.543	2014	88	74	162	5,545	729	1,354	253	33	146	686	586	49	1,104	83	20	6,242	2,111	432	19	43	34	118	.244	.320	.381	.700
24	Royals	.549	2014	89	73	162	5,545	651	1,456	286	29	95	604	380	53	985	153	36	6,058	2,085	410	33	47	22	131	.263	.314	.376	.690
25	Cardinals	.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