how many teams went under record in mlb in playoffs

The Baltimore Orioles have an over/under record of 1-5 in the postseason all-time.

	TEAM	ATS	ATS COV %	ATS AVG	O/U REC	O/U AVG	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	Orioles	0-6	0	-2.5	1-5	-0.8	6	.000	0	6	206	14	40	8	0	5	14	14	1	57	1	1	222	63	13	0	1	0	2	.194	.248	.306	.554
2	Blue Jays	4-11	26.7	-0.7	4-10-1	-1.2	15	.333	5	10	505	48	116	19	3	16	45	37	6	136	4	0	552	189	38	1	3	5	15	.230	.289	.374	.663
3	Giants	6-4	60	0	4-6	-1	10	.400	4	6	332	26	70	14	2	6	26	18	0	90	2	3	357	106	22	2	5	1	3	.211	.248	.319	.567
4	Mets	9-8	52.9	-0.1	13-4	+2.1	17	.471	8	9	557	72	130	16	4	16	72	69	14	144	9	0	648	202	36	0	8	4	11	.233	.329	.363	.691
5	Red Sox	20-12	62.5	+1	20-11-1	+1.5	32	.563	18	14	1,126	169	286	56	3	47	164	116	9	273	12	4	1,262	489	106	5	6	7	25	.254	.327	.434	.761
6	Guardians	19-23	45.2	+0.1	18-22-2	+0.5	42	.476	20	22	1,401	146	305	56	1	40	138	118	17	413	20	4	1,555	483	97	12	7	10	26	.218	.285	.345	.630
7	Rangers	14-6	70	+0.9	11-6-3	+1.2	20	.650	13	7	703	107	172	33	4	32	101	73	7	170	11	1	785	309	69	0	2	3	12	.245	.321	.440	.761
8	Cubs	12-18	40	-0.9	11-18-1	-0.1	30	.500	15	15	996	102	203	44	3	30	98	79	16	289	16	1	1,102	343	77	6	5	8	16	.204	.272	.344	.616
9	Dodgers	47-53	47	-0.4	49-44-7	+0.8	100	.560	56	44	3,327	461	770	134	13	137	442	407	44	913	75	14	3,823	1,341	284	21	24	28	55	.231	.321	.403	.724
10	Nationals	18-9	66.7	+1.4	14-11-2	+0.6	27	.593	16	11	894	122	209	40	2	29	117	106	12	258	15	1	1,030	340	71	10	8	12	13	.234	.321	.380	.701
11	Twins	3-9	25	-2.1	6-6	-0.7	12	.250	3	9	379	31	75	16	0	13	30	52	6	135	4	1	438	130	29	1	0	0	11	.198	.304	.343	.647
12	Yankees	32-26	55.2	+0.1	25-28-5	+0.6	58	.500	29	29	1,916	260	422	68	3	90	251	242	18	574	31	7	2,199	766	161	4	19	11	33	.220	.311	.400	.710
13	Rockies	2-3	40	-1.7	1-4	-1	5	.200	1	4	182	12	38	8	1	2	12	12	0	49	1	2	197	54	11	1	2	0	2	.209	.255	.297	.552
14	Diamondbacks	12-9	57.1	+1.4	11-10	+0.7	21	.524	11	10	711	95	181	27	6	30	93	67	4	196	23	4	798	310	63	10	6	5	14	.255	.320	.436	.756
15	Astros	50-49	50.5	+0.1	48-45-6	+0.6	99	.596	59	40	3,375	449	834	138	5	140	432	345	49	801	41	10	3,795	1,402	283	10	16	29	75	.247	.324	.415	.740
16	Athletics	3-6	33.3	-2.3	6-3	+2.1	9	.333	3	6	293	37	67	6	0	16	35	30	2	79	0	0	329	121	22	0	4	1	8	.229	.301	.413	.714
17	Braves	26-21	55.3	-0.1	22-24-1	-0.3	47	.511	24	23	1,563	172	347	61	5	56	168	140	15	467	18	5	1,726	586	122	1	7	12	18	.222	.291	.375	.666
18	Brewers	10-12	45.5	-0.3	6-15-1	-1.5	22	.364	8	14	737	64	174	36	1	21	60	66	7	231	16	4	816	275	58	3	3	8	16	.236	.304	.373	.677
19	Rays	16-18	47.1	-0.3	14-18-2	+0	34	.441	15	19	1,124	124	234	35	2	53	121	98	10	381	9	8	1,237	432	90	2	3	4	21	.208	.277	.384	.661
20	Cardinals	3-12	20	-0.3	8-7	+0.2	15	.267	4	11	502	52	104	28	1	9	49	44	11	147	8	1	565	161	38	3	5	5	6	.207	.283	.321	.604
21	White Sox	2-5	28.6	-1.8	5-2	+2.3	7	.286	2	5	253	29	72	9	0	8	29	18	5	68	1	1	277	105	17	0	1	0	6	.285	.343	.415	.758
22	Reds	1-1	50	-1.5	0-2	-4.5	2	.000	0	2	77	0	13	1	0	0	0	5	1	28	1	1	83	14	1	0	0	1	0	.169	.229	.182	.411
23	Padres	12-13	48	+0.1	16-8-1	+1.2	25	.480	12	13	830	108	190	28	3	34	105	71	10	225	9	3	920	326	65	3	6	4	10	.229	.296	.393	.688
24	Marlins	2-5	28.6	-0.8	1-5-1	-1.7	7	.286	2	5	226	14	42	10	0	4	14	13	7	64	3	1	246	64	14	0	0	1	6	.186	.252	.283	.535
25	Phillies	20-14	58.8	+1.1	16-16-2	0	34	.588	20	14	1,083	148	242	58	2	51	143	119	16	323	25	5	1,231	457	111	5	8	10	21	.223	.308	.422	.729