Since 1995, Andy Pettitte has the most wins in the postseason, with 19 wins.

Interpreted as:

MLB most playoff wins by a player since 1995

	NAME	W	L	W%	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	Andy Pettitte A. Pettitte	19	11	.633	44	44	3.81	183	0	0	0	276.2	285	117	121	31	76	3	0	4	1,157	4	5.95	2.47	2.41	1.01	15.8	6.6	1.30	.294	3.94	9.27
2	Justin Verlander J. Verlander	17	12	.586	38	37	3.58	244	2	1	0	226.0	179	90	93	32	74	5	0	0	920	8	9.72	2.95	3.30	1.27	26.5	8.0	1.12	.260	3.70	7.13
3	Clayton Kershaw C. Kershaw	13	13	.500	41	32	4.62	213	0	0	1	196.2	171	101	107	32	54	4	2	6	803	11	9.75	2.47	3.94	1.46	26.5	6.7	1.14	.278	4.90	7.83
4	Gerrit Cole G. Cole	11	6	.647	22	22	2.77	156	0	0	0	133.1	100	41	50	19	36	3	0	1	537	1	10.53	2.43	4.33	1.28	29.1	6.7	1.02	.251	3.38	6.75
5	Roger Clemens R. Clemens	11	6	.647	27	26	3.71	133	1	1	0	150.1	129	62	64	15	52	4	1	1	633	8	7.96	3.11	2.56	0.90	21.0	8.2	1.20	.266	3.83	7.72
6	Tom Glavine T. Glavine	11	10	.524	26	26	3.16	109	0	0	0	159.2	142	56	64	12	67	5	0	8	671	3	6.14	3.78	1.63	0.68	16.2	10.0	1.31	.272	3.61	8.00
7	Chris Carpenter C. Carpenter	10	4	.714	18	18	3.00	68	1	1	0	108.0	104	36	43	11	36	6	0	2	461	1	5.67	3.00	1.89	0.92	14.8	7.8	1.30	.274	3.58	8.67
8	CC Sabathia	10	7	.588	26	23	4.28	121	1	0	0	130.1	137	62	67	15	63	8	0	9	586	5	8.36	4.35	1.92	1.04	20.6	10.8	1.53	.322	4.63	9.46
9	Curt Schilling C. Schilling	10	1	.909	15	15	2.12	92	3	1	0	102.0	80	24	26	10	15	3	0	0	401	0	8.12	1.32	6.13	0.88	22.9	3.7	0.93	.249	2.29	7.06
10	Greg Maddux G. Maddux	10	12	.455	31	26	2.73	109	2	0	1	178.0	171	54	77	10	40	8	2	13	738	3	5.51	2.02	2.73	0.51	14.8	5.4	1.19	.282	3.89	8.65
11	John Smoltz J. Smoltz	10	3	.769	31	17	3.04	132	1	0	4	139.1	110	47	48	13	41	2	11	4	562	3	8.53	2.65	3.22	0.84	23.5	7.3	1.08	.259	3.10	7.11
12	David Wells D. Wells	10	5	.667	18	17	3.38	70	1	0	0	112.0	109	42	46	12	19	7	0	1	457	1	5.63	1.53	3.68	0.96	15.3	4.2	1.14	.278	3.70	8.76
13	Nathan Eovaldi N. Eovaldi	9	3	.750	17	12	3.05	82	0	0	0	79.2	65	27	28	6	18	1	1	3	325	0	9.26	2.03	4.56	0.68	25.2	5.5	1.04	.271	3.16	7.34
14	Jon Lester J. Lester	9	7	.563	26	22	2.51	133	0	0	0	154.0	117	43	46	15	40	3	2	0	610	4	7.77	2.34	3.33	0.88	21.8	6.6	1.02	.243	2.69	6.84
15	Orlando Hernandez O. Hernandez	9	3	.750	19	14	2.55	107	0	0	0	106.0	77	30	32	10	55	4	0	3	443	1	9.08	4.67	1.95	0.85	24.2	12.4	1.25	.251	2.72	6.54
16	Julio Urías J. Urías	8	3	.727	23	6	3.68	60	0	0	1	58.2	45	24	25	10	12	0	4	1	232	2	9.20	1.84	5.00	1.53	25.9	5.2	0.97	.233	3.84	6.90
17	Max Scherzer M. Scherzer	8	8	.500	33	28	3.78	182	0	0	1	157.1	121	66	69	23	62	9	1	4	652	8	10.41	3.55	2.94	1.32	27.9	9.5	1.16	.261	3.95	6.92
18	Madison Bumgarner M. Bumgarner	8	3	.727	16	14	2.11	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
19	John Lackey J. Lackey	8	6	.571	29	23	3.44	114	0	0	0	144.0	135	55	58	7	47	4	2	6	601	10	7.13	2.94	2.43	0.44	19.0	7.8	1.26	.298	3.63	8.44
20	Mariano Rivera M. Rivera	8	1	.889	96	0	0.70	110	0	0	42	141.0	86	11	13	2	21	3	78	4	527	3	7.02	1.34	5.24	0.13	20.9	4.0	0.76	.215	0.83	5.49
21	Yoshinobu Yamamoto Y. Yamamoto	7	1	.875	10	9	2.25	48	2	0	0	56.0	35	14	16	5	12	4	1	0	218	1	7.71	1.93	4.00	0.80	22.0	5.5	0.84	.201	2.57	5.63
22	Framber Valdez F. Valdez	7	6	.538	17	16	4.34	95	0	0	0	85.0	82	41	45	14	34	4	1	0	360	0	10.06	3.60	2.79	1.48	26.4	9.4	1.36	.319	4.76	8.68
23	Blake Snell B. Snell	7	5	.583	18	15	3.27	102	0	0	1	82.2	59	30	30	10	36	1	1	0	331	5	11.10	3.92	2.83	1.09	30.8	10.9	1.15	.269	3.27	6.42
24	Charlie Morton C. Morton	7	5	.583	18	17	3.60	92	0	0	0	80.0	67	32	34	8	33	7	1	0	343	5	10.35	3.71	2.79	0.90	26.8	9.6	1.25	.291	3.83	7.54
25	Cliff Lee C. Lee	7	3	.700	11	11	2.52	89	3	0	0	82.0	66	23	27	2	10	1	0	0	320	2	9.77	1.10	8.90	0.22	27.8	3.1	0.93	.294	2.96	7.24