Pitchers won their most games in a postseason in 2020, with 53 wins.

Interpreted as:

most postseason pitcher wins in a season

	POSITION	W	SEASON	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	Pitcher	53	2020	53	.500	540	106	4.15	1,030	0	0	26	934.1	830	431	466	159	384	52	106	17	4,013	34	9.92	3.70	2.68	1.53	25.7	9.6	1.30	.281	4.49	8.00
2	Pitcher	43	2024	43	.500	451	86	3.97	739	0	0	25	760.0	658	335	362	98	330	44	86	21	3,266	26	8.75	3.91	2.24	1.16	22.6	10.1	1.30	.273	4.29	7.79
3	Pitcher	40	2025	42	.488	418	82	3.76	746	2	0	18	740.0	639	309	335	100	275	37	82	28	3,118	27	9.07	3.34	2.71	1.22	23.9	8.8	1.24	.275	4.07	7.77
4	Pitcher	40	2023	40	.500	412	82	3.93	734	0	0	20	727.2	663	318	336	110	279	28	82	13	3,086	27	9.08	3.45	2.63	1.36	23.8	9.0	1.29	.286	4.16	8.20
5	Pitcher	40	2022	40	.500	381	80	3.42	809	0	0	21	732.1	570	278	293	93	228	45	80	12	2,996	21	9.94	2.80	3.55	1.14	27.0	7.6	1.09	.262	3.60	7.01
6	Pitcher	38	2017	38	.500	350	76	4.03	699	1	0	19	672.2	559	301	326	104	264	30	75	24	2,825	43	9.35	3.53	2.65	1.39	24.7	9.3	1.22	.263	4.36	7.48
7	Pitcher	38	2013	38	.500	337	76	3.30	654	1	0	19	670.2	575	246	270	55	221	27	75	28	2,772	32	8.78	2.97	2.96	0.74	23.6	8.0	1.19	.287	3.62	7.72
8	Pitcher	38	2011	38	.500	350	76	4.62	583	1	1	19	675.1	660	347	371	96	255	35	75	37	2,921	30	7.77	3.40	2.29	1.28	20.0	8.7	1.35	.289	4.94	8.80
9	Pitcher	38	2003	38	.500	294	76	3.60	579	4	3	18	699.2	643	280	306	73	262	27	72	40	2,977	22	7.45	3.37	2.21	0.94	19.4	8.8	1.29	.280	3.94	8.27
10	Pitcher	37	2021	37	.500	404	74	4.21	693	0	0	11	652.2	612	305	317	93	221	25	74	18	2,774	24	9.56	3.05	3.14	1.28	25.0	8.0	1.28	.298	4.37	8.44
11	Pitcher	37	2019	37	.500	365	74	3.73	730	0	0	14	658.1	572	273	298	95	257	20	74	23	2,792	24	9.98	3.51	2.84	1.30	26.1	9.2	1.26	.282	4.07	7.82
12	Pitcher	37	2012	37	.500	339	74	3.05	622	2	1	14	673.1	573	228	258	61	209	21	72	16	2,792	20	8.31	2.79	2.98	0.82	22.3	7.5	1.16	.272	3.45	7.66
13	Pitcher	36	2015	36	.500	317	72	4.03	653	2	1	19	655.0	552	293	314	91	201	23	69	21	2,695	11	8.97	2.76	3.25	1.25	24.2	7.5	1.15	.267	4.31	7.58
14	Pitcher	35	2016	35	.500	325	70	3.44	630	3	1	18	630.0	522	241	259	71	199	28	67	19	2,587	17	9.00	2.84	3.17	1.01	24.4	7.7	1.14	.272	3.70	7.46
15	Pitcher	35	2001	35	.500	238	70	3.11	522	5	3	15	622.1	542	215	249	65	198	23	65	19	2,582	20	7.55	2.86	2.64	0.94	20.2	7.7	1.19	.269	3.60	7.84
16	Pitcher	34	2004	34	.500	302	68	4.83	484	1	1	12	633.1	638	340	353	100	262	35	67	22	2,766	22	6.88	3.72	1.85	1.42	17.5	9.5	1.42	.285	5.02	9.07
17	Pitcher	34	2002	34	.500	288	68	4.87	443	0	0	21	593.2	646	321	350	88	212	24	68	34	2,620	21	6.72	3.21	2.09	1.33	16.9	8.1	1.45	.301	5.31	9.79
18	Pitcher	34	1997	34	.500	246	68	3.87	507	7	1	12	611.2	558	263	286	68	262	16	61	22	2,604	10	7.46	3.86	1.94	1.00	19.5	10.1	1.34	.280	4.21	8.21
19	Pitcher	33	2018	33	.500	357	66	3.73	635	0	0	13	613.1	491	254	262	70	257	24	65	26	2,565	35	9.32	3.77	2.47	1.03	24.8	10.0	1.22	.267	3.84	7.20
20	Pitcher	32	2014	32	.500	303	64	3.69	482	2	2	19	595.0	530	244	255	57	188	20	62	16	2,469	21	7.29	2.84	2.56	0.86	19.5	7.6	1.21	.275	3.86	8.02
21	Pitcher	32	2010	32	.500	261	64	3.33	539	4	3	14	567.2	480	210	232	58	177	24	60	21	2,347	18	8.55	2.81	3.05	0.92	23.0	7.5	1.16	.272	3.68	7.61
22	Pitcher	32	2008	32	.500	268	64	3.92	497	0	0	15	570.0	543	248	270	74	238	19	64	26	2,461	18	7.85	3.76	2.09	1.17	20.2	9.7	1.37	.287	4.26	8.57
23	Pitcher	32	1996	32	.500	261	64	3.80	479	1	0	19	582.0	530	246	269	72	221	18	63	22	2,467	14	7.41	3.42	2.17	1.11	19.4	9.0	1.29	.273	4.16	8.20
24	Pitcher	32	1981	32	.500	180	64	2.72	344	11	4	12	563.1	500	170	191	43	188	5	53	29	2,338	10	5.50	3.00	1.83	0.69	14.7	8.0	1.22	.260	3.05	7.99
25	Pitcher	31	2000	31	.500	242	62	3.85	440	4	3	14	561.1	511	240	257	45	248	25	58	30	2,424	24	7.05	3.98	1.77	0.72	18.2	10.2	1.35	.280	4.12	8.19