pitcher with lowest era with 5+ starts in the playoffs

Sandy Koufax has the lowest career ERA in the postseason when starting 5+ games, with an ERA of 0.95.

	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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	Scott McGregor S. McGregor	1.63	6	6	3	3	.500	26	3	2	0	49.2	37	9	10	3	8	0	0	2	189	0	4.71	1.45	3.25	0.54	13.8	4.2	0.91	.224	1.81	6.70
11	Stan Coveleski S. Coveleski	1.74	5	5	3	2	.600	11	4	1	0	41.1	31	8	9	2	7	0	0	0	162	0	2.40	1.52	1.57	0.44	6.8	4.3	0.92	.204	1.96	6.75
12	Lefty Grove L. Grove	1.75	5	8	4	2	.667	36	4	0	2	51.1	46	10	12	0	6	0	3	0	205	0	6.31	1.05	6.00	0.00	17.6	2.9	1.01	.282	2.10	8.06
13	Orval Overall O. Overall	1.75	5	8	3	1	.750	35	3	1	0	51.1	37	10	11	0	15	1	2	0	203	2	6.14	2.63	2.33	0.00	17.2	7.4	1.01	.243	1.93	6.49
14	Carl Hubbell C. Hubbell	1.79	6	6	4	2	.667	32	4	0	0	50.1	40	10	18	3	12	1	0	2	204	1	5.72	2.15	2.67	0.54	15.7	5.9	1.03	.237	3.22	7.15
15	Waite Hoyt W. Hoyt	1.83	11	12	6	4	.600	49	6	1	0	83.2	81	17	28	2	22	1	1	0	345	0	5.27	2.37	2.23	0.22	14.2	6.4	1.23	.292	3.01	8.71
16	George Mullin G. Mullin	1.86	6	7	3	3	.500	36	6	1	0	58.0	46	12	22	1	15	3	1	0	236	0	5.59	2.33	2.40	0.16	15.3	6.4	1.05	.249	3.41	7.14
17	Bob Gibson B. Gibson	1.89	9	9	7	2	.778	92	8	2	0	81.0	55	17	19	6	17	2	0	3	312	2	10.22	1.89	5.41	0.67	29.5	5.4	0.89	.251	2.11	6.11
18	Jack Billingham J. Billingham	1.93	6	10	2	1	.667	32	0	0	1	42.0	28	9	11	0	15	2	2	1	169	0	6.86	3.21	2.13	0.00	18.9	8.9	1.02	.233	2.36	6.00
19	Herb Pennock H. Pennock	1.95	5	10	5	0	1.000	24	4	0	3	55.1	39	12	12	3	8	0	5	0	210	0	3.90	1.30	3.00	0.49	11.4	3.8	0.85	.206	1.95	6.34
20	Fernando Valenzuela F. Valenzuela	1.98	8	9	5	1	.833	44	2	0	0	63.2	47	14	14	3	31	0	0	7	259	3	6.22	4.38	1.42	0.42	17.0	12.0	1.23	.243	1.98	6.64
21	Doug Drabek D. Drabek	2.05	7	7	2	5	.286	33	2	0	0	48.1	40	11	16	1	14	1	0	3	198	1	6.14	2.61	2.36	0.19	16.7	7.1	1.12	.262	2.98	7.45
22	Matt Cain M. Cain	2.10	8	8	4	2	.667	33	0	0	0	51.1	40	12	13	6	14	6	0	2	210	1	5.79	2.45	2.36	1.05	15.7	6.7	1.05	.225	2.28	7.01
23	Madison Bumgarner M. Bumgarner	2.11	14	16	8	3	.727	87	3	3	1	102.1	74	24	25	8	18	5	1	2	398	0	7.65	1.58	4.83	0.70	21.9	4.5	0.90	.236	2.20	6.51
24	Johnny Podres J. Podres	2.11	6	6	4	1	.800	18	2	1	0	38.1	29	9	14	3	13	2	0	0	157	0	4.23	3.05	1.38	0.70	11.5	8.3	1.10	.215	3.29	6.81
25	Walter Johnson W. Johnson	2.16	5	6	3	3	.500	35	5	1	0	50.0	56	12	20	4	15	3	1	3	212	1	6.30	2.70	2.33	0.72	16.5	7.1	1.42	.335	3.60	10.08