which pitcher has the best batting average in postseason history minimum 20 at bats

Jack Coombs has the best career batting average by a pitcher in the postseason with 20+ at-bats, with an average of .333.

	NAME	AVG	AB	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	OBP	SLG	OPS
1	Jack Coombs J. Coombs	.333	24	6	1	8	1	0	0	4	0	0	3	0	0	24	9	1	0		0	1	.333	.375	.708
2	Allie Reynolds A. Reynolds	.308	26	15	2	8	1	0	0	2	2	0	7	0	0	28	9	1	0		0	0	.357	.346	.703
3	Don Gullett D. Gullett	.292	24	18	3	7	1	0	1	6	0	0	5	0	0	28	11	2	4	0	0	0	.292	.458	.750
4	Christy Mathewson C. Mathewson	.281	32	11	2	9	0	0	0	1	3	0	8	0	0	37	9	0	2		0	0	.343	.281	.624
5	Zack Greinke Z. Greinke	.269	26	14	1	7	0	0	0	1	0	0	3	0	0	30	7	0	4	0	0	0	.269	.269	.538
6	Mike Hampton M. Hampton	.250	20	10	1	5	0	0	0	1	0	0	8	0	0	21	5	0	1	0	0	0	.250	.250	.500
7	Steve Carlton S. Carlton	.222	27	12	2	6	0	0	1	5	0	1	7	0	0	29	9	1	1	0	0	0	.250	.333	.583
8	John Smoltz J. Smoltz	.214	56	34	3	12	1	0	0	2	3	0	19	3	0	64	13	1	5	0	0	3	.254	.232	.486
9	Orel Hershiser O. Hershiser	.208	24	12	3	5	2	0	0	3	1	0	5	0	0	25	7	2	0	0	0	0	.240	.292	.532
10	Bullet Joe Bush B. Joe Bush	.208	24	10	2	5	1	0	0	2	2	0	4	0	0	26	6	1	0		0	0	.269	.250	.519
11	Warren Spahn W. Spahn	.200	20	8	0	4	0	0	0	4	1	0	9	0	0	21	4	0	0	0	0	0	.238	.200	.438
12	Red Ruffing R. Ruffing	.176	34	14	1	6	1	0	0	4	3	0	6	0	0	38	7	1	1		1	4	.243	.206	.449
13	Tom Glavine T. Glavine	.169	59	33	4	10	1	1	0	5	5	0	18	0	0	70	13	2	6	0	0	0	.234	.220	.455
14	Chris Carpenter C. Carpenter	.162	37	17	0	6	2	0	0	2	0	0	12	0	0	42	8	2	5	0	0	1	.162	.216	.378
15	Art Nehf A. Nehf	.160	25	10	1	4	0	0	0	0	3	0	7	0	0	28	4	0	0		0	0	.250	.160	.410
16	George Mullin G. Mullin	.160	25	9	2	4	1	0	0	1	2	0	4	0	0	27	5	1	0		0	0	.222	.200	.422
17	Clayton Kershaw C. Kershaw	.154	39	29	2	6	1	0	0	0	6	0	13	0	0	52	7	1	7	0	0	0	.267	.179	.446
18	Cole Hamels C. Hamels	.150	20	13	1	3	0	0	0	0	2	0	7	0	0	27	3	0	5	0	0	0	.227	.150	.377
19	Kevin Brown K. Brown	.150	20	10	1	3	0	0	0	0	0	0	9	0	0	24	3	0	4	0	0	0	.150	.150	.300
20	Lefty Gomez L. Gomez	.150	20	7	3	3	0	0	0	4	2	0	7	0	0	22	3	0	0		0	0	.227	.150	.377
21	Dave McNally D. McNally	.148	27	12	3	4	1	0	2	7	0	0	11	0	0	28	11	3	1	0	0	0	.148	.407	.556
22	Bob Gibson B. Gibson	.143	28	9	4	4	0	0	2	3	2	0	7	0	0	32	10	2	2	0	0	1	.200	.357	.557
23	Waite Hoyt W. Hoyt	.133	30	12	0	4	0	0	0	1	0	0	3	0	0	32	4	0	2		0	1	.133	.133	.267
24	Roger Clemens R. Clemens	.100	20	11	1	2	0	0	0	1	1	0	9	0	0	24	2	0	2	1	0	0	.136	.100	.236
25	Tom Seaver T. Seaver	.100	20	8	1	2	2	0	0	1	1	0	6	0	0	21	4	2	0	0	0	1	.143	.200	.343