Spud Chandler has the best career win percentage, at .717.

Interpreted as:

highest w% with a minimum of 100 decisions by a pitcher all-time

	NAME	W%	DEC	W	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	ERA-	FIP	FIP-	H/9	PRAA
1	Spud Chandler S. Chandler	.717	152	109	43	211	184	2.84	614	109	26	6	1485.0	1,327	468	549	64	463	19	14		6,102	20	3.72	2.81	1.33	0.39	10.1	7.6	1.21	.256	3.33	73	3.30	88	8.04	71.2
2	Clayton Kershaw C. Kershaw	.692	312	216	96	444	441	2.52	3,007	25	15	0	2802.1	2,150	786	863	233	696	46	1	28	11,065	105	9.66	2.24	4.32	0.75	27.2	6.3	1.02	.271	2.77	65	2.85	70	6.90	367.1
3	Dave Foutz D. Foutz	.690	213	147	66	251	216	2.84	790	202	16	4	1997.1	1,843	631	1,068	38	510		33		8,425	94	3.56	2.30	1.55	0.17	9.4	6.1	1.18	.257	4.81	80	3.28	95	8.30	46.1
4	Whitey Ford W. Ford	.690	342	236	106	498	438	2.75	1,956	156	45	11	3170.1	2,766	967	1,107	228	1,086	28	35	44	13,036	75	5.55	3.08	1.80	0.65	15.0	8.3	1.22	.261	3.14	75	3.26	88	7.85	156.9
5	Bob Caruthers B. Caruthers	.688	317	218	99	340	310	2.83	900	298	24	3	2828.2	2,678	891	1,393	59	597		29		11,842	129	2.86	1.90	1.51	0.19	7.6	5.0	1.16	.257	4.43	81	3.27	94	8.52	60.9
6	Pedro Martinez P. Martinez	.687	319	219	100	476	409	2.93	3,154	46	17	3	2827.1	2,221	919	1,006	239	760	141	23	30	11,394	62	10.04	2.42	4.15	0.76	27.7	6.7	1.05	.279	3.20	66	2.91	68	7.07	454.6
7	Don Gullett D. Gullett	.686	159	109	50	266	186	3.11	921	44	14	11	1390.0	1,205	481	528	115	501	12	35	42	5,763	36	5.96	3.24	1.84	0.74	16.0	8.7	1.23	.259	3.42	88	3.42	97	7.80	17.9
8	Lefty Grove L. Grove	.680	441	300	141	616	457	3.06	2,266	298	35	54	3940.2	3,849	1,339	1,594	162	1,187	42	123		16,622	51	5.18	2.71	1.91	0.37	13.6	7.1	1.28	.284	3.64	68	3.36	76	8.79	462.8
9	Max Fried M. Fried	.677	124	84	40	189	172	3.02	979	6	4	0	1011.2	885	339	378	85	276	42	10	6	4,129	46	8.71	2.46	3.55	0.76	23.7	6.7	1.15	.291	3.36	71	3.26	78	7.87	102.2
10	Jim Hughes J. Hughes	.675	123	83	40	134	128	3.00	368	111	8	0	1088.0	1,006	363	512	16	372	53	6		4,538	33	3.04	3.08	0.99	0.13	8.1	8.2	1.27	.265	4.24	88	3.51	101	8.32	-2.3
11	Joe Wood J. Wood	.672	174	117	57	225	158	2.03	989	121	28	10	1434.1	1,138	324	497	10	421	49	56		5,640	43	6.21	2.64	2.35	0.06	17.5	7.5	1.09	.270	3.12	70	2.26	78	7.14	105.8
12	Babe Ruth B. Ruth	.671	140	94	46	163	147	2.28	488	107	17	4	1221.1	974	309	400	10	441	29	12		4,896	25	3.60	3.25	1.11	0.07	10.0	9.0	1.16	.245	2.95	82	2.81	100	7.18	-6.6
13	Chien-Ming Wang C. Wang	.667	102	68	34	174	126	4.36	394	4	1	1	845.2	918	410	434	65	252	27	27	10	3,593	31	4.19	2.68	1.56	0.69	11.0	7.0	1.38	.299	4.62	100	4.18	97	9.77	14.6
14	Vic Raschi V. Raschi	.667	198	132	66	269	255	3.72	944	106	26	3	1819.0	1,666	752	828	138	727	26	5	5	7,675	44	4.67	3.60	1.30	0.68	12.3	9.5	1.32	.262	4.10	93	3.70	94	8.24	47
15	Bill Hoffer B. Hoffer	.667	138	92	46	161	142	3.75	314	125	10	3	1254.1	1,333	523	712	22	453	60	18		5,453	22	2.25	3.25	0.69	0.16	5.8	8.3	1.42	.285	5.11	90	4.22	99	9.56	3.3
16	Larry Corcoran L. Corcoran	.665	266	177	89	277	268	2.36	1,103	256	22	2	2392.1	2,147	626	1,235	68	496	2	9		10,001	113	4.15	1.87	2.22	0.26	11.0	5.0	1.10	.250	4.65	79	2.99	97	8.08	41
17	Christy Mathewson C. Mathewson	.665	561	373	188	636	552	2.13	2,507	435	79	30	4788.2	4,219	1,135	1,620	89	848	59	73		18,913	115	4.71	1.59	2.96	0.17	13.3	4.5	1.06	.268	3.04	75	2.26	76	7.93	363
18	Sam Leever S. Leever	.660	294	194	100	388	299	2.47	847	241	39	13	2660.2	2,449	731	1,023	29	587	88	75		10,662	46	2.87	1.99	1.44	0.10	7.9	5.5	1.14	.266	3.46	81	2.84	92	8.28	74.2
19	Roy Halladay R. Halladay	.659	308	203	105	416	390	3.38	2,117	67	20	1	2749.1	2,646	1,034	1,135	236	592	81	6	28	11,287	56	6.93	1.94	3.58	0.77	18.8	5.2	1.18	.292	3.72	77	3.39	77	8.66	296
20	Roger Clemens R. Clemens	.658	538	354	184	709	707	3.12	4,672	118	46	0	4916.2	4,185	1,707	1,885	363	1,580	159	0	63	20,240	143	8.55	2.89	2.96	0.66	23.1	7.8	1.17	.284	3.45	70	3.08	71	7.66	680.4
21	Sal Maglie S. Maglie	.657	181	119	62	303	232	3.15	862	93	25	14	1723.0	1,591	603	684	169	562	44	35	8	7,182	18	4.50	2.94	1.53	0.88	12.0	7.8	1.25	.256	3.57	79	3.79	94	8.31	44.9
22	David Price D. Price	.657	239	157	82	400	322	3.32	2,076	17	3	3	2143.2	1,930	790	865	221	562	63	19	16	8,807	40	8.72	2.36	3.69	0.93	23.6	6.4	1.16	.290	3.63	81	3.38	83	8.10	165.9
23	Gerrit Cole G. Cole	.657	233	153	80	317	317	3.18	2,251	8	5	0	1954.0	1,627	690	740	217	500	61	0	8	7,861	58	10.37	2.30	4.50	1.00	28.6	6.4	1.09	.292	3.41	79	3.16	77	7.49	213.5
24	Max Scherzer M. Scherzer	.657	329	216	113	473	464	3.18	3,446	12	5	0	2913.0	2,376	1,029	1,102	343	764	113	2	20	11,768	79	10.65	2.36	4.51	1.06	29.3	6.5	1.08	.286	3.40	76	3.19	77	7.34	308.3
25	Sandy Koufax S. Koufax	.655	252	165	87	397	314	2.76	2,396	137	40	9	2324.1	1,754	713	806	204	817	18	44	48	9,497	87	9.28	3.16	2.93	0.79	25.2	8.6	1.11	.256	3.12	75	2.69	75	6.79	226.6