which pitcher has the lowest career era in the postseason (minimum 3 gs)

Matthew Boyd has the best career ERA in the postseason when starting 3+ games, with an ERA of 0.75.

	NAME	ERA	GS	G	W	L	W%	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	Matthew Boyd M. Boyd	0.75	3	4	0	0		14	0	0	0	12.0	8	1	1	0	7	1	0	0	50	0	10.50	5.25	2.00	0.00	28.0	14.0	1.25	.286	0.75	6.00
2	Harry Brecheen H. Brecheen	0.83	3	7	4	1	.800	18	3	1	0	32.2	28	3	3	0	12	0	4	3	129	0	4.96	3.31	1.50	0.00	14.0	9.3	1.22	.283	0.83	7.71
3	Claude Osteen C. Osteen	0.86	3	3	1	2	.333	7	1	1	0	21.0	12	2	3	2	6	0	0	0	77	0	3.00	2.57	1.17	0.86	9.1	7.8	0.86	.161	1.29	5.14
4	Babe Ruth B. Ruth	0.87	3	3	3	0	1.000	8	2	1	0	31.0	19	3	3	1	10	1	0	0	116	1	2.32	2.90	0.80	0.29	6.9	8.6	0.94	.188	0.87	5.52
5	Sherry Smith S. Smith	0.89	3	3	1	2	.333	5	3	0	0	30.1	17	3	4	0	9	0	0	1	110	0	1.48	2.67	0.56	0.00	4.5	8.2	0.86	.177	1.19	5.04
6	Sandy Koufax S. Koufax	0.95	7	8	4	3	.571	61	4	2	0	57.0	36	6	10	2	11	0	0	1	213	0	9.63	1.74	5.55	0.32	28.6	5.2	0.82	.245	1.58	5.68
7	Steve Rogers S. Rogers	0.98	3	4	3	1	.750	11	2	1	0	27.2	24	3	3	2	4	0	1	1	105	1	3.58	1.30	2.75	0.65	10.5	3.8	1.01	.250	0.98	7.81
8	Hippo Vaughn H. Vaughn	1.00	3	3	1	2	.333	17	3	1	0	27.0	17	3	3	0	5	1	0	1	97	0	5.67	1.67	3.40	0.00	17.5	5.2	0.81	.230	1.00	5.67
9	Monte Pearson M. Pearson	1.01	4	4	4	0	1.000	28	3	1	0	35.2	19	4	5	1	7	0	0	0	133	0	7.07	1.77	4.00	0.25	21.1	5.3	0.73	.186	1.26	4.79
10	Christy Mathewson C. Mathewson	1.06	11	11	5	5	.500	48	10	4	0	101.2	76	12	22	1	10	1	0	3	391	1	4.25	0.89	4.80	0.09	12.3	2.6	0.85	.227	1.95	6.73
11	Blue Moon Odom B. Moon Odom	1.13	4	10	3	1	.750	27	1	1	0	39.2	22	5	7	0	13	0	1	0	150	2	6.13	2.95	2.08	0.00	18.0	8.7	0.88	.200	1.59	4.99
12	Ian Anderson I. Anderson	1.26	8	8	4	0	1.000	40	0	0	0	35.2	20	5	5	1	17	2	0	0	145	1	10.09	4.29	2.35	0.25	27.6	11.7	1.04	.224	1.26	5.05
13	Babe Adams B. Adams	1.29	3	4	3	0	1.000	11	3	1	0	28.0	20	4	5	2	6	1	1	0	111	0	3.54	1.93	1.83	0.64	9.9	5.4	0.93	.198	1.61	6.43
14	Eddie Plank E. Plank	1.32	6	7	2	5	.286	32	6	0	0	54.2	36	8	11	0	11	4	1	1	215	1	5.27	1.81	2.91	0.00	14.9	5.1	0.86	.214	1.81	5.93
15	Pete Schourek P. Schourek	1.35	4	4	1	1	.500	19	0	0	0	26.2	21	4	4	1	10	0	0	0	108	1	6.41	3.38	1.90	0.34	17.6	9.3	1.16	.256	1.35	7.09
16	Bill Hallahan B. Hallahan	1.36	5	7	3	1	.750	27	3	2	1	39.2	29	6	6	0	23	1	1	1	172	1	6.13	5.22	1.17	0.00	15.7	13.4	1.31	.240	1.36	6.58
17	Jon Matlack J. Matlack	1.40	4	4	2	2	.500	20	1	1	0	25.2	12	4	7	2	8	1	0	0	98	0	7.01	2.81	2.50	0.70	20.4	8.2	0.78	.149	2.45	4.21
18	Ranger Suárez R. Suárez	1.43	8	10	3	1	.750	40	0	0	1	37.2	27	6	7	2	12	1	1	0	153	0	9.56	2.87	3.33	0.48	26.1	7.8	1.04	.255	1.67	6.45
19	Jhoulys Chacin J. Chacin	1.46	3	3	2	1	.667	9	0	0	0	12.1	9	2	2	1	6	0	0	1	51	0	6.57	4.38	1.50	0.73	17.6	11.8	1.22	.229	1.46	6.57
20	Stephen Strasburg S. Strasburg	1.46	8	9	6	2	.750	71	0	0	0	55.1	44	9	13	4	8	1	0	1	218	1	11.55	1.30	8.88	0.65	32.6	3.7	0.94	.299	2.11	7.16
21	Jim Bouton J. Bouton	1.48	3	3	2	1	.667	11	1	0	0	24.1	19	4	5	0	10	0	0	1	100	2	4.07	3.70	1.10	0.00	11.0	10.0	1.19	.241	1.85	7.03
22	Pablo López P. López	1.53	3	3	2	1	.667	17	0	0	0	17.2	14	3	3	2	3	1	0	0	71	1	8.66	1.53	5.67	1.02	23.9	4.2	0.96	.250	1.53	7.13
23	Mickey Lolich M. Lolich	1.57	5	5	3	1	.750	31	3	0	0	46.0	34	8	9	3	11	1	0	0	180	0	6.07	2.15	2.82	0.59	17.2	6.1	0.98	.231	1.76	6.65
24	George Earnshaw G. Earnshaw	1.58	8	8	4	3	.571	56	5	1	0	62.2	39	11	14	2	17	0	0	1	245	1	8.04	2.44	3.29	0.29	22.9	6.9	0.89	.218	2.01	5.60
25	Cy Young C. Young	1.59	3	4	2	1	.667	17	3	0	0	34.0	31	6	13	1	4	1	1	0	142	0	4.50	1.06	4.25	0.26	12.0	2.8	1.03	.252	3.44	8.21