which team has the least number of losses in one playoff season when they won the world series

14 teams won once. The first three are the San Francisco Giants 4 times and the Boston Red Sox and the Los Angeles Dodgers 3 times.

	TEAM	SERIES W	L	SEASON	SERIES	W	L%	G	W%	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Giants	1	0	2012	World Series	4	.000	4	1.000	132	16	32	4	2	4	15	9	0	41	3	1	143	52	10	1	1	1	2	.242	.289	.394	.683
2	Red Sox	1	0	2007	World Series	4	.000	4	1.000	141	29	47	18	0	3	29	19	1	20	2	0	165	74	21	2	2	3	3	.333	.411	.525	.936
3	White Sox	1	0	2005	World Series	4	.000	4	1.000	154	20	44	9	2	6	20	15	3	30	5	1	174	75	17	2	0	2	5	.286	.360	.487	.847
4	Red Sox	1	0	2004	World Series	4	.000	4	1.000	138	24	39	11	2	4	24	24	4	20	0	0	167	66	17	1	0	1	3	.283	.404	.478	.882
5	Yankees	1	0	1999	World Series	4	.000	4	1.000	137	21	37	5	0	5	20	13	0	31	5	1	153	57	10	3	0	3	3	.270	.333	.416	.749
6	Yankees	1	0	1998	World Series	4	.000	4	1.000	139	26	43	5	0	6	25	20	1	29	1	1	162	66	11	1	1	3	4	.309	.398	.475	.872
7	Reds	1	0	1990	World Series	4	.000	4	1.000	142	22	45	9	2	3	21	15	1	9	2	2	160	67	14	1	1	1	5	.317	.384	.472	.855
8	Athletics	1	0	1989	World Series	4	.000	4	1.000	146	32	44	8	3	9	30	18	1	22	4	1	165	85	20	0	0	3	2	.301	.382	.582	.964
9	Reds	1	0	1976	World Series	4	.000	4	1.000	134	22	42	10	3	4	21	12	0	16	7	4	148	70	17	0	2	2	5	.313	.365	.522	.887
10	Orioles	1	0	1966	World Series	4	.000	4	1.000	120	13	24	3	1	4	10	11	0	17	0	1	133	41	8	2	0	2	4	.200	.267	.342	.609
11	Dodgers	1	0	1963	World Series	4	.000	4	1.000	117	12	25	3	2	3	12	11	0	25	2	1	131	41	8	2	1	2	5	.214	.279	.350	.629
12	Giants	1	0	1954	World Series	4	.000	4	1.000	130	21	33	3	0	2	20	17	0	24	1	1	155	42	5	6	2	4	1	.254	.336	.323	.659
13	Yankees	1	0	1950	World Series	4	.000	4	1.000	135	11	30	3	1	2	10	13	1	12	1	1	151	41	6	2		1	0	.222	.295	.304	.599
14	Yankees	1	0	1939	World Series	4	.000	4	1.000	131	20	27	4	1	7	18	9	0	20	0	0	142	54	12	2		1	1	.206	.257	.412	.669
15	Yankees	1	0	1938	World Series	4	.000	4	1.000	135	22	37	6	1	5	21	11	1	16	3	2	148	60	12	1		1	2	.274	.333	.444	.778
16	Yankees	1	0	1932	World Series	4	.000	4	1.000	144	37	45	6	0	8	36	23	4	26	0	2	172	75	14	1		3	5	.313	.421	.521	.942
17	Yankees	1	0	1928	World Series	4	.000	4	1.000	134	27	37	7	0	9	25	13	1	13	4	0	151	71	16	3		0	3	.276	.345	.530	.874
18	Yankees	1	0	1927	World Series	4	.000	4	1.000	136	23	38	6	2	2	19	13	1	25	2	0	152	54	10	2		1	2	.279	.347	.397	.744
19	Giants	1	0	1922	World Series	4	.000	5	1.000	162	18	50	2	1	1	18	12	0	15	1	3	177	57	4	3		1	6	.309	.356	.352	.708
20	Braves	1	0	1914	World Series	4	.000	4	1.000	135	16	33	6	2	1	14	15	1	18	9	3	153	46	9	2		1	3	.244	.325	.341	.665
21	Cubs	1	0	1907	World Series	4	.000	5	1.000	166	19	42	6	1	0	15	13	4	26	16	5	192	50	7	9		0	0	.253	.322	.301	.624
22	Dodgers	1	1	2024	World Series	4	.200	5	.800	160	25	33	7	2	7	25	19	3	34	3	2	187	65	16	1	4	1	2	.206	.296	.406	.702
23	Rangers	1	1	2023	World Series	4	.200	5	.800	174	26	38	7	1	8	24	19	2	44	1	0	195	71	16	0	0	1	4	.218	.303	.408	.711
24	Red Sox	1	1	2018	World Series	4	.200	5	.800	189	28	42	7	0	8	27	21	1	53	2	2	212	73	15	1	0	5	4	.222	.303	.386	.690
25	Royals	1	1	2015	World Series	4	.200	5	.800	197	27	47	10	1	2	25	17	0	37	7	0	219	65	13	2	3	4	2	.239	.295	.330	.625