what mlb teams have never lost the world series

The Pittsburgh Pirates lost in the 1903 World Series against the Boston Americans, 5 games to 3.

	TEAM	SEASON	SERIES	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	IBB	GIDP	AVG	OBP	SLG	OPS
1	Pirates	1903	World Series	8	.375	3	5	270	24	64	7	9	1	22	14	1	45	9	3	288	92	17	3	0	1	.237	.277	.341	.618
2	Athletics	1905	World Series	5	.200	1	4	155	3	24	5	0	0	2	5	1	25	2	2	164	29	5	3	0	2	.155	.186	.187	.373
3	Cubs	1906	World Series	6	.333	2	4	184	18	36	9	0	0	11	18	2	28	9	6	217	45	9	13	1	1	.196	.275	.245	.519
4	Tigers	1907	World Series	5	.000	0	4	172	6	37	1	2	0	6	9	1	22	6	5	185	42	3	3	0	2	.215	.258	.244	.502
5	Tigers	1908	World Series	5	.200	1	4	158	15	33	5	0	0	14	12	2	26	5	2	176	38	5	4	0	2	.209	.273	.241	.514
6	Tigers	1909	World Series	7	.429	3	4	232	28	56	18	0	2	26	20	4	22	6	6	261	80	20	5	0	1	.241	.313	.345	.657
7	Cubs	1910	World Series	5	.200	1	4	158	15	37	11	1	0	13	18	0	31	3	8	181	50	12	5	0	2	.234	.313	.316	.629
8	Giants	1911	World Series	6	.333	2	4	189	13	33	11	1	0	10	14	3	44	3	9	209	46	12	3	0	0	.175	.243	.243	.486
9	Giants	1912	World Series	8	.429	3	4	274	31	74	13	4	1	25	22	3	39	11	11	303	98	18	4	2	1	.270	.331	.358	.689
10	Giants	1913	World Series	5	.200	1	4	164	15	33	3	1	1	15	8	3	19	5	4	177	41	5	2	0	4	.201	.251	.250	.501
11	Athletics	1914	World Series	4	.000	0	4	128	6	22	9	0	0	5	13	0	28	2	1	143	31	9	2	2	2	.172	.248	.242	.490
12	Phillies	1915	World Series	5	.200	1	4	148	10	27	4	1	1	9	10	2	25	2	6	165	36	6	5	0	1	.182	.244	.243	.487
13	Robins	1916	World Series	5	.200	1	4	170	13	34	2	5	1	11	14	2	19	1	3	192	49	8	6	1	4	.200	.269	.288	.557
14	Giants	1917	World Series	6	.333	2	4	199	17	51	5	4	2	16	6	2	27	4	2	210	70	11	3	1	4	.256	.285	.352	.637
15	Cubs	1918	World Series	6	.333	2	4	176	10	37	5	1	0	10	18	2	14	3	5	200	44	6	4	0	3	.210	.291	.250	.541
16	White Sox	1919	World Series	8	.375	3	5	263	20	59	10	3	1	17	15	3	30	5	5	287	78	14	6	0	2	.224	.274	.297	.571
17	Robins	1920	World Series	7	.286	2	5	215	8	44	5	1	0	8	10	0	20	1	4	230	51	6	5	1	5	.205	.240	.237	.477
18	Yankees	1921	World Series	8	.375	3	5	241	22	50	7	1	2	20	27	1	44	6	7	276	65	10	7	0	2	.207	.290	.270	.560
19	Yankees	1922	World Series	5	.000	0	4	158	11	32	6	1	2	11	8	2	20	2	1	172	46	9	4	1	1	.203	.250	.291	.541
20	Giants	1923	World Series	6	.333	2	4	201	17	47	2	3	5	17	12	1	18	1	1	214	70	10	0	0	5	.234	.280	.348	.629
21	Giants	1924	World Series	7	.429	3	4	253	27	66	9	2	4	21	25	2	40	3	3	284	91	15	4	3	8	.261	.332	.360	.692
22	Senators	1925	World Series	7	.429	3	4	225	26	59	8	0	8	26	17	2	32	2	6	252	91	16	8	0	1	.262	.320	.404	.724
23	Yankees	1926	World Series	7	.429	3	4	223	21	54	10	1	4	20	31	1	31	1	3	262	78	15	7	2	5	.242	.337	.350	.687
24	Pirates	1927	World Series	4	.000	0	4	130	10	29	6	1	0	10	4	1	7	0	0	136	37	7	1	1	3	.223	.252	.285	.536
25	Cardinals	1928	World Series	4	.000	0	4	131	10	27	5	1	1	9	11	1	29	3	2	144	37	7	1	0	3	.206	.273	.282	.555