worst win percentage in the playoffs by a player with at least 1 win

Charlie Leibrandt has the worst career win percentage in the postseason when winning 1+ game, at .125.

	NAME	W	W%	L	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Charlie Leibrandt C. Leibrandt	1	.125	7	13	7	3.77	34	1	0	0	57.1	53	24	25	2	19	2	2	1	238	0	5.34	2.98	1.79	0.31	14.3	8.0	1.26	.282	3.92	8.32
2	C.J. Wilson	1	.143	6	11	10	5.26	44	0	0	0	53.0	49	31	35	10	30	4	0	6	237	3	7.47	5.09	1.47	1.70	18.6	12.7	1.49	.262	5.94	8.32
3	Jake Peavy J. Peavy	1	.167	5	9	9	7.98	21	0	0	0	38.1	53	34	34	4	17	0	0	4	178	1	4.93	3.99	1.24	0.94	11.8	9.6	1.83	.360	7.98	12.44
4	Vida Blue V. Blue	1	.167	5	17	10	4.31	47	1	1	2	64.2	55	31	31	6	23	0	2	2	270	3	6.54	3.20	2.04	0.84	17.4	8.5	1.21	.253	4.31	7.65
5	Trevor Bauer T. Bauer	1	.200	4	11	7	2.94	44	0	0	0	33.2	33	11	16	4	8	1	1	1	143	1	11.76	2.14	5.50	1.07	30.8	5.6	1.22	.337	4.28	8.82
6	Edinson Volquez E. Volquez	1	.200	4	7	7	5.35	26	0	0	0	35.1	27	21	22	4	23	2	0	2	154	0	6.62	5.86	1.13	1.02	16.9	14.9	1.42	.232	5.60	6.88
7	J.A. Happ	1	.200	4	15	4	5.86	26	0	0	0	27.2	36	18	18	6	16	0	1	0	134	1	8.46	5.20	1.63	1.95	19.4	11.9	1.88	.349	5.86	11.71
8	Tim Hudson T. Hudson	1	.200	4	14	13	3.69	53	1	0	0	75.2	75	31	38	6	22	4	0	1	322	1	6.30	2.62	2.41	0.71	16.5	6.8	1.28	.291	4.52	8.92
9	Dan Miceli D. Miceli	1	.200	4	13	0	6.97	8	0	0	0	10.1	13	8	8	5	4	0	4	0	47	0	6.97	3.48	2.00	4.35	17.0	8.5	1.65	.267	6.97	11.32
10	Zane Smith Z. Smith	1	.200	4	5	3	2.88	18	0	0	0	25.0	30	8	8	3	4	1	1	2	107	0	6.48	1.44	4.50	1.08	16.8	3.7	1.36	.333	2.88	10.80
11	Rick Reuschel R. Reuschel	1	.200	4	8	7	5.85	14	0	0	0	32.1	43	21	24	1	12	1	0	3	148	1	3.90	3.34	1.17	0.28	9.5	8.1	1.70	.350	6.68	11.97
12	Jerry Reuss J. Reuss	2	.200	8	11	11	3.59	25	2	1	0	62.2	57	25	30	5	25	0	0	3	271	1	3.59	3.59	1.00	0.72	9.2	9.2	1.31	.241	4.31	8.19
13	Bill Donovan B. Donovan	1	.200	4	6	6	2.88	33	5	0	0	50.0	41	16	21	1	17	4	0	0	204	1	5.94	3.06	1.94	0.18	16.2	8.3	1.16	.268	3.78	7.38
14	Carlos Rodón C. Rodón	1	.250	3	6	5	6.64	28	0	0	0	20.1	25	15	15	5	5	1	0	1	92	1	12.39	2.21	5.60	2.21	30.4	5.4	1.48	.377	6.64	11.07
15	Tony Gonsolin T. Gonsolin	1	.250	3	8	4	9.20	18	0	0	0	14.2	18	15	15	6	11	0	1	0	74	1	11.05	6.75	1.64	3.68	24.3	14.9	1.98	.308	9.20	11.05
16	Tyler Glasnow T. Glasnow	2	.250	6	10	10	5.72	61	0	0	0	45.2	43	29	30	10	25	0	0	0	204	7	12.02	4.93	2.44	1.97	29.9	12.3	1.49	.306	5.91	8.47
17	Brandon Woodruff B. Woodruff	1	.250	3	8	4	3.18	40	0	0	0	28.1	20	10	10	2	4	2	1	1	108	1	12.71	1.27	10.00	0.64	37.0	3.7	0.85	.300	3.18	6.35
18	Chris Sale C. Sale	1	.250	3	10	7	6.35	47	0	0	0	34.0	36	24	26	7	13	2	1	0	152	1	12.44	3.44	3.62	1.85	30.9	8.6	1.44	.349	6.88	9.53
19	Sonny Gray S. Gray	1	.250	3	6	6	3.26	30	0	0	0	30.1	27	11	13	4	15	2	0	1	133	3	8.90	4.45	2.00	1.19	22.6	11.3	1.38	.280	3.86	8.01
20	Rick Porcello R. Porcello	1	.250	3	16	7	4.73	34	0	0	0	40.0	44	21	23	6	7	5	5	2	174	2	7.65	1.58	4.86	1.35	19.5	4.0	1.27	.311	5.18	9.90
21	Brian Duensing B. Duensing	1	.250	3	8	2	7.24	9	0	0	0	13.2	15	11	11	2	6	0	0	1	61	1	5.93	3.95	1.50	1.32	14.8	9.8	1.54	.295	7.24	9.88
22	Chien-Ming Wang C. Wang	1	.250	3	4	4	7.58	7	0	0	0	19.0	28	16	19	5	5	3	0	0	90	0	3.32	2.37	1.40	2.37	7.8	5.6	1.74	.329	9.00	13.26
23	Rich Harden R. Harden	1	.250	3	4	2	6.35	9	0	0	0	11.1	12	8	8	2	10	0	2	3	55	1	7.15	7.94	0.90	1.59	16.4	18.2	1.94	.294	6.35	9.53
24	Johan Santana J. Santana	1	.250	3	11	5	3.97	32	0	0	0	34.0	35	15	15	2	10	1	0	1	143	2	8.47	2.65	3.20	0.53	22.4	7.0	1.32	.337	3.97	9.26
25	Jarrod Washburn J. Washburn	1	.250	3	8	7	4.91	21	0	0	0	36.2	40	20	26	8	14	2	1	2	164	0	5.15	3.44	1.50	1.96	12.8	8.5	1.47	.269	6.38	9.82