best winning percentage as a player since 2018 while playing at least 20 games

Since 2018, 50 pitchers are tied for the highest win percentage when pitching in 20+ games, at 1.000. The first three are Ryan Zeferjahn, Matt Sauer and Brandon Eisert.

	NAME	W%	G	W	L	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	ERA-	FIP	FIP-	H/9	PRAA
1	Ryan Zeferjahn R. Zeferjahn	1.000	33	2	0	0	3.34	44	0	0	1	35.0	24	13	13	3	16	3	5	1	143	1	11.31	4.11	2.75	0.77	30.8	11.2	1.14	.273	3.34	83	3.34	80	6.17	3.3
2	Matt Sauer M. Sauer	1.000	21	1	0	1	5.11	22	0	0	1	37.0	39	21	23	6	14	1	12	0	162	1	5.35	3.41	1.57	1.46	13.6	8.6	1.43	.277	5.59	123	5.24	129	9.49	-4.8
3	Brandon Eisert B. Eisert	1.000	26	1	0	2	4.91	30	0	0	1	29.1	33	16	16	3	10	3	7	1	129	1	9.20	3.07	3.00	0.92	23.3	7.8	1.47	.361	4.91	124	3.70	89	10.13	1.4
4	Bryan King B. King	1.000	53	4	0	0	1.98	58	0	0	0	50.0	34	11	11	2	16	4	10	0	201	1	10.44	2.88	3.63	0.36	28.9	8.0	1.00	.264	1.98	50	2.51	62	6.12	8.5
5	Dedniel Núñez D. Núñez	1.000	30	2	0	0	2.79	51	0	0	1	38.2	25	12	14	3	14	0	5	1	153	2	11.87	3.26	3.64	0.70	33.3	9.2	1.01	.259	3.26	71	2.61	65	5.82	6.1
6	Ben Casparius B. Casparius	1.000	20	6	0	1	2.79	50	0	0	0	42.0	36	13	14	1	10	0	1	0	171	0	10.71	2.14	5.00	0.21	29.2	5.8	1.10	.318	3.00	70	1.72	42	7.71	10.7
7	Justin Sterner J. Sterner	1.000	27	1	0	0	1.84	33	0	0	0	29.1	20	6	7	2	14	4	4	1	124	1	10.13	4.30	2.36	0.61	26.6	11.3	1.16	.254	2.15	47	3.55	88	6.14	1.6
8	Michel Otañez M. Otañez	1.000	41	1	0	0	4.46	60	0	0	1	38.1	32	19	21	3	25	4	7	0	174	6	14.09	5.87	2.40	0.70	34.5	14.4	1.49	.354	4.93	115	3.30	83	7.51	2.9
9	Cody Bolton C. Bolton	1.000	34	1	0	0	5.79	40	0	0	0	42.0	52	27	29	6	24	1	10	0	200	0	8.57	5.14	1.67	1.29	20.0	12.0	1.81	.357	6.21	140	4.94	119	11.14	-3.8
10	Kody Funderburk K. Funderburk	1.000	44	4	0	0	5.60	57	0	0	1	54.2	60	34	35	7	21	7	14	0	246	4	9.38	3.46	2.71	1.15	23.2	8.5	1.48	.344	5.76	140	4.28	104	9.88	-1
11	Lane Ramsey L. Ramsey	1.000	21	1	0	0	5.85	18	0	0	0	20.0	25	13	13	1	9	0	7	0	92	3	8.10	4.05	2.00	0.45	19.6	9.8	1.70	.375	5.85	135	3.45	78	11.25	2.1
12	Joe Jacques J. Jacques	1.000	25	2	0	1	5.46	22	0	0	1	29.2	38	18	20	3	11	7	7	2	138	2	6.67	3.34	2.00	0.91	15.9	8.0	1.65	.368	6.07	122	4.89	115	11.53	-2
13	Brent Headrick B. Headrick	1.000	20	3	0	0	4.89	45	0	0	1	35.0	30	19	19	8	14	4	7	0	152	1	11.57	3.60	3.21	2.06	29.6	9.2	1.26	.272	4.89	115	5.15	121	7.71	-3.6
14	Anthony Veneziano A. Veneziano	1.000	34	1	0	0	3.90	30	0	0	0	32.1	36	14	18	5	13	2	5	0	148	2	8.35	3.62	2.31	1.39	20.3	8.8	1.52	.316	5.01	93	4.66	116	10.02	-2.3
15	Sammy Peralta S. Peralta	1.000	25	2	0	0	4.37	29	0	0	0	35.0	40	17	20	4	18	0	11	0	162	0	7.46	4.63	1.61	1.03	17.9	11.1	1.66	.324	5.14	104	4.58	106	10.29	-0.9
16	Joe La Sorsa J. La Sorsa	1.000	41	1	0	0	4.47	42	0	0	0	50.1	49	25	25	7	14	7	15	1	219	0	7.51	2.50	3.00	1.25	19.2	6.4	1.25	.282	4.47	106	4.61	108	8.76	-1.8
17	Alek Jacob A. Jacob	1.000	32	1	0	0	4.83	42	0	0	0	41.0	40	22	23	7	13	8	8	0	181	0	9.22	2.85	3.23	1.54	23.2	7.2	1.29	.297	5.05	123	4.82	122	8.78	-3.8
18	Daysbel Hernández D. Hernández	1.000	41	7	0	0	2.47	48	0	0	0	43.2	27	12	13	1	27	2	12	2	180	2	9.89	5.56	1.78	0.21	26.7	15.0	1.24	.255	2.68	59	3.21	81	5.56	3.7
19	Steven Cruz S. Cruz	1.000	34	1	0	4	2.50	33	0	0	0	36.0	21	10	11	2	17	2	11	0	148	3	8.25	4.25	1.94	0.50	22.3	11.5	1.06	.202	2.75	57	3.62	87	5.25	2.1
20	Nick Vespi N. Vespi	1.000	45	6	0	0	3.88	46	0	0	1	53.1	55	23	23	8	13	2	14	2	220	0	7.76	2.19	3.54	1.35	20.9	5.9	1.27	.311	3.88	99	4.23	106	9.28	-1.5
21	Bennett Sousa B. Sousa	1.000	46	4	0	0	5.28	42	0	0	1	46.0	45	27	28	5	16	1	11	1	197	4	8.22	3.13	2.63	0.98	21.3	8.1	1.33	.301	5.48	133	3.81	93	8.80	1.7
22	Daniel Duarte D. Duarte	1.000	36	4	0	0	3.99	28	0	0	1	38.1	29	17	18	7	24	1	9	0	165	1	6.57	5.63	1.17	1.64	17.0	14.5	1.38	.210	4.23	88	6.10	135	6.81	-6.2
23	Marcos Diplan M. Diplan	1.000	28	2	0	0	4.04	32	0	0	0	35.2	26	16	18	6	20	0	6	0	150	3	8.07	5.05	1.60	1.51	21.3	13.3	1.29	.217	4.54	93	5.23	117	6.56	-2.9
24	Kent Emanuel K. Emanuel	1.000	22	1	0	0	4.58	25	0	0	0	35.1	32	18	19	8	11	4	9	0	150	0	6.37	2.80	2.27	2.04	16.7	7.3	1.22	.235	4.84	108	5.96	144	8.15	-7.2
25	Anthony Gose A. Gose	1.000	31	3	0	0	4.78	41	0	0	0	32.0	26	17	19	6	17	1	6	1	138	3	11.53	4.78	2.41	1.69	29.7	12.3	1.34	.274	5.34	123	4.69	120	7.31	-2.7