Clayton Kershaw has the best career win percentage when winning 150+ games, at .699.

	NAME	W	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	Clayton Kershaw C. Kershaw	223	.699	96	455	451	2.53	3,052	25	15	0	2855.1	2,193	804	881	235	713	46	1	28	11,279	108	9.62	2.25	4.28	0.74	27.1	6.3	1.02	.271	2.78	65	2.85	70	6.91	375.1
2	Whitey Ford W. Ford	236	.690	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
3	Bob Caruthers B. Caruthers	218	.688	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
4	Pedro Martinez P. Martinez	219	.687	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
5	Lefty Grove L. Grove	300	.680	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
6	Larry Corcoran L. Corcoran	177	.665	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
7	Christy Mathewson C. Mathewson	373	.665	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
8	Sam Leever S. Leever	194	.660	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
9	Roy Halladay R. Halladay	203	.659	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
10	Roger Clemens R. Clemens	354	.658	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
11	David Price D. Price	157	.657	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
12	Gerrit Cole G. Cole	153	.657	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
13	Sandy Koufax S. Koufax	165	.655	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
14	Max Scherzer M. Scherzer	220	.653	117	483	474	3.22	3,489	12	5	0	2963.0	2,433	1,059	1,132	354	779	114	2	20	11,987	80	10.60	2.37	4.48	1.08	29.1	6.5	1.08	.287	3.44	77	3.23	78	7.39	302.5
15	Ron Guidry R. Guidry	170	.651	91	368	323	3.29	1,778	95	26	4	2392.0	2,198	874	953	226	633	13	23	24	9,794	56	6.69	2.38	2.81	0.85	18.2	6.5	1.18	.276	3.59	84	3.26	82	8.27	192
16	Lefty Gomez L. Gomez	189	.649	102	368	320	3.34	1,468	173	28	10	2503.0	2,290	930	1,091	138	1,095	19	31		10,729	39	5.28	3.94	1.34	0.50	13.7	10.2	1.35	.269	3.92	79	3.88	94	8.23	70.4
17	John Clarkson J. Clarkson	328	.648	178	531	518	2.81	1,978	485	37	5	4536.1	4,295	1,417	2,384	159	1,191	80	12		19,146	182	3.92	2.36	1.66	0.32	10.3	6.2	1.21	.263	4.73	75	3.35	88	8.52	289.8
18	Mordecai Brown M. Brown	239	.648	130	481	332	2.06	1,375	271	55	49	3172.1	2,708	725	1,044	43	673	61	138		12,422	61	3.90	1.91	2.04	0.12	11.1	5.4	1.07	.259	2.96	71	2.42	83	7.68	161.9
19	Randy Johnson R. Johnson	303	.646	166	618	603	3.29	4,875	100	37	2	4135.1	3,346	1,513	1,703	411	1,497	190	7	37	17,067	109	10.61	3.26	3.26	0.89	28.6	8.8	1.17	.291	3.71	75	3.18	73	7.28	554.3
20	Dizzy Dean D. Dean	150	.644	83	317	230	3.02	1,163	154	26	31	1967.1	1,919	661	774	95	453	27	77		8,171	12	5.32	2.07	2.57	0.43	14.2	5.5	1.21	.284	3.54	77	3.22	78	8.78	190.8
21	Grover Alexander G. Alexander	373	.642	208	696	600	2.56	2,198	436	90	32	5190.0	4,868	1,476	1,852	165	951	70	81		20,893	38	3.81	1.65	2.31	0.29	10.5	4.6	1.12	.269	3.21	73	2.88	81	8.44	359.1
22	Mike Mussina M. Mussina	270	.638	153	537	536	3.68	2,813	57	23	0	3562.2	3,460	1,458	1,559	376	785	60	0	29	14,593	71	7.11	1.98	3.58	0.95	19.3	5.4	1.19	.292	3.94	82	3.57	79	8.74	372.8
23	Jim Palmer J. Palmer	268	.638	152	558	521	2.86	2,212	211	53	4	3948.0	3,349	1,253	1,395	303	1,311	38	15	37	16,114	85	5.04	2.99	1.69	0.69	13.7	8.1	1.18	.249	3.18	80	3.50	95	7.63	83.2
24	Kid Nichols K. Nichols	361	.634	208	621	562	2.96	1,881	532	48	17	5067.1	4,929	1,664	2,480	156	1,272	129	56		21,082	169	3.34	2.26	1.48	0.28	8.9	6.0	1.22	.271	4.40	73	3.48	85	8.75	377.8
25	Deacon Phillippe D. Phillippe	189	.634	109	372	289	2.59	929	242	27	12	2607.0	2,518	749	1,071	41	363	59	72		10,380	45	3.21	1.25	2.56	0.14	8.9	3.5	1.11	.276	3.70	85	2.60	82	8.69	156.8