pitcher most w% vs each team, min 20 wins, all-time

Carl Mays has the highest career win percentage by a pitcher against a team when winning 20+ games, at .921 versus the Philadelphia Athletics.

	NAME	W	W%	OPP	L	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	Carl Mays C. Mays	35	.921	Athletics	3	47	39	1.88	112	32	8	2	344.1	284		87	7	53	9	7			1	2.93	1.39	2.11	0.18		3.9	0.98	.238	2.27	7.42
2	Larry Jackson L. Jackson	21	.913	Mets	2	27	27	2.24	114	12	6	0	216.2	191	54	62	9	47	2	0	3	862	1	4.74	1.95	2.43	0.37	13.2	5.5	1.10	.264	2.58	7.93
3	Russ Meyer R. Meyer	24	.889	Cubs	3	42	37	3.57	151	14	2	0	275.0	268	109	124	29	81	2	4	1	1,152	4	4.94	2.65	1.86	0.95	13.1	7.0	1.27	.269	4.06	8.77
4	David Price D. Price	23	.885	Blue Jays	3	32	31	2.39	186	1	1	0	207.1	168	55	66	25	54	8	0	1	829	2	8.07	2.34	3.44	1.09	22.4	6.5	1.07	.257	2.86	7.29
5	Roy Oswalt R. Oswalt	23	.885	Reds	3	34	32	2.81	175	1	0	0	218.0	194	68	71	20	56	10	0	3	882	2	7.22	2.31	3.13	0.83	19.8	6.3	1.15	.280	2.93	8.01
6	Dwight Gooden D. Gooden	28	.875	Cubs	4	40	39	3.32	235	11	3	1	284.1	264	105	116	18	90	7	1	3	1,190	5	7.44	2.85	2.61	0.57	19.7	7.6	1.25	.293	3.67	8.36
7	Dizzy Dean D. Dean	27	.871	Reds	4	47	30	2.19	188	22	8	5	304.0	268	74	82	7	75	5	15		1,229	2	5.57	2.22	2.51	0.21	15.3	6.1	1.13	.274	2.43	7.93
8	Deacon Phillippe D. Phillippe	32	.865	Doves	5	43	33	0.38	116	29	8	2	309.2	262		86	6	38	4	9			3	3.37	1.10	3.05	0.17		3.1	0.97	.245	2.50	7.61
9	Larry Jansen L. Jansen	24	.857	Redlegs	4	36	33	2.52	109	22	4	1	264.2	260	74	83	19	52	2	3		1,087	4	3.71	1.77	2.10	0.65	10.0	4.8	1.18	.266	2.82	8.84
10	Pat Malone P. Malone	30	.857	Phillies	5	45	31	2.61	174	22	3	1	292.2	276	85	105	19	94	2	11		1,224	9	5.35	2.89	1.85	0.58	14.2	7.7	1.26	.275	3.23	8.49
11	Lefty Leifield L. Leifield	24	.857	Braves	4	38	27	0.26	92	16	7	1	239.2	194		72	3	74	17	8		963	3	3.45	2.78	1.24	0.11	9.6	7.7	1.12	.246	2.70	7.29
12	Mort Cooper M. Cooper	27	.844	Phillies	5	42	37	2.05	138	25	5	1	320.2	254	73	81	10	77	2	4		1,266	6	3.87	2.16	1.79	0.28	10.9	6.1	1.03	.235	2.27	7.13
13	Johnny Cueto J. Cueto	21	.840	Pirates	4	33	33	2.25	191	4	2	0	212.0	158	53	56	15	55	9	0	4	840	0	8.11	2.33	3.47	0.64	22.7	6.5	1.00	.251	2.38	6.71
14	Curt Davis C. Davis	21	.840	Phillies	4	39	28	2.25	63	18	3	5	252.1	226	63	71	9	38	3	7		1,013	0	2.25	1.36	1.66	0.32	6.2	3.8	1.05	.241	2.53	8.06
15	Vic Raschi V. Raschi	26	.839	Athletics	5	40	39	2.75	128	21	4	1	287.2	237	88	95	11	124	6	1		1,198	9	4.00	3.88	1.03	0.34	10.7	10.4	1.25	.243	2.97	7.41
16	Sam Leever S. Leever	31	.838	Cardinals	6	38	34	0.38	82	29	6	0	285.2	263		93	1	50	6	4			1	2.58	1.58	1.64	0.03		4.4	1.10	.260	2.93	8.29
17	Roy Halladay R. Halladay	20	.833	Orioles	4	31	27	2.89	111	1	0	0	193.0	189	62	77	16	39	6	0	2	801	1	5.18	1.82	2.85	0.75	13.9	4.9	1.18	.275	3.59	8.81
18	David Wells D. Wells	20	.833	Indians	4	41	30	3.78	138	2	0	1	216.2	237	91	102	26	37	3	6	5	901	5	5.73	1.54	3.73	1.08	15.3	4.1	1.26	.303	4.24	9.84
19	Cy Young C. Young	44	.830	Senators	9	58	52	0.54	249	48	11	2	479.2	364		105	7	55	13	4			9	4.67	1.03	4.53	0.13		3.2	0.87	.253	1.97	6.83
20	Andy Pettitte A. Pettitte	28	.824	Orioles	6	45	43	3.54	158	1	0	0	272.1	284	107	116	20	91	3	1	3	1,151	4	5.22	3.01	1.74	0.66	13.7	7.9	1.38	.300	3.83	9.39
21	Mel Parnell M. Parnell	23	.821	Senators	5	42	33	2.92	104	17	4	0	256.0	249	83	101	8	108	6	3	0	1,104	9	3.66	3.80	0.96	0.28	9.4	9.8	1.39	.274	3.55	8.75
22	Joe McGinnity J. McGinnity	27	.818	Doves	6	39	29	0.03	92	24	3	3	277.2	237		77	4	50	13	9			0	2.98	1.62	1.84	0.13		4.5	1.03	.242	2.50	7.68
23	Gaylord Perry G. Perry	22	.815	Red Sox	5	32	32	2.59	145	18	3	0	243.1	195	70	80	18	68	5	0	5	979	7	5.36	2.52	2.13	0.67	14.8	6.9	1.08	.238	2.96	7.21
24	Lefty Grove L. Grove	35	.814	Red Sox	8	57	40	2.71	258	27	4	6	361.2	322	109	124	7	109	8	15		1,483	3	6.42	2.71	2.37	0.17	17.4	7.3	1.19	.286	3.09	8.01
25	Sam Leever S. Leever	26	.813	Doves	6	47	34	0.35	83	27	5	1	308.0	268		95	5	56	5	11			5	2.43	1.64	1.48	0.15		4.6	1.05	.246	2.78	7.83