most wins for pitcher in career before turning 41 years old

Walter Johnson has won the most career games by a pitcher younger than 41, with 412 wins.

Interpreted as:

most regular-season wins for pitcher in career before turning 41 years old

	NAME	W	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	Walter Johnson W. Johnson	412	270	.604	788	654	1.73	3,456	520	108	34	5806.1	4,816		1,867	96	1,354	206	126			151	5.36	2.10	2.55	0.15		5.8	1.06	.261	2.89	7.46
2	Grover Alexander G. Alexander	348	188	.649	631	547	2.29	2,111	411	89	31	4785.1	4,417		1,656	134	885	64	73			33	3.97	1.66	2.39	0.25		4.6	1.11	.267	3.11	8.31
3	Greg Maddux G. Maddux	334	204	.621	679	675	3.07	3,179	108	35	0	4627.2	4,312	1,578	1,788	319	945	126	3	169	18,833	64	6.18	1.84	3.36	0.62	16.9	5.0	1.14	.280	3.48	8.39
4	Steve Carlton S. Carlton	314	215	.594	673	655	3.04	3,920	251	55	1	4879.2	4,291	1,649	1,880	360	1,656	48	7	141	20,143	169	7.23	3.05	2.37	0.66	19.5	8.2	1.22	.278	3.47	7.91
5	Warren Spahn W. Spahn	310	197	.611	612	546	3.01	2,205	327	55	24	4363.0	3,956	1,458	1,636	340	1,226	33	53		17,915	63	4.55	2.53	1.80	0.70	12.3	6.8	1.19	.256	3.37	8.16
6	Tom Seaver T. Seaver	304	192	.613	628	619	2.82	3,537	229	61	1	4606.2	3,791	1,442	1,591	363	1,334	69	6	115	18,610	121	6.91	2.61	2.65	0.71	19.0	7.2	1.11	.258	3.11	7.41
7	Roger Clemens R. Clemens	303	158	.657	596	595	3.17	4,053	117	46	0	4210.2	3,610	1,485	1,637	313	1,359	140	0	52	17,370	124	8.66	2.90	2.98	0.67	23.3	7.8	1.18	.287	3.50	7.72
8	Don Sutton D. Sutton	295	228	.564	689	672	3.17	3,315	174	57	5	4796.1	4,210	1,690	1,866	396	1,223	71	12	95	19,603	99	6.22	2.29	2.71	0.74	16.9	6.2	1.13	.261	3.50	7.90
9	Lefty Grove L. Grove	293	134	.686	595	436	3.02	2,215	288	35	54	3804.0	3,693	1,276	1,512	154	1,142	39	123		16,022	48	5.24	2.70	1.94	0.36	13.8	7.1	1.27	.284	3.58	8.74
10	Tom Glavine T. Glavine	290	191	.603	635	635	3.46	2,481	55	24	0	4149.2	4,012	1,596	1,758	322	1,399	61	0	139	17,468	63	5.38	3.03	1.77	0.70	14.2	8.0	1.30	.279	3.81	8.70
11	Robin Roberts R. Roberts	286	245	.539	676	609	3.40	2,362	305	45	25	4688.2	4,582	1,773	1,962	505	901	54	49		19,222	34	4.53	1.73	2.62	0.97	12.3	4.7	1.17	.265	3.77	8.80
12	Fergie Jenkins F. Jenkins	284	226	.557	664	594	3.34	3,191	267	49	7	4500.2	4,142	1,669	1,853	484	997	84	37	117	18,404	62	6.38	1.99	3.20	0.97	17.3	5.4	1.14	.268	3.71	8.28
13	Early Wynn E. Wynn	284	225	.558	627	564	3.52	2,155	272	46	14	4230.2	3,983	1,653	1,890	311	1,657	60	58		18,016	50	4.58	3.52	1.30	0.66	12.0	9.2	1.33	.265	4.02	8.47
14	Bert Blyleven B. Blyleven	279	238	.540	667	661	3.27	3,631	241	60	0	4837.0	4,482	1,760	1,953	413	1,293	150	3	69	19,924	111	6.76	2.41	2.81	0.77	18.2	6.5	1.19	.282	3.63	8.34
15	Gaylord Perry G. Perry	279	217	.563	658	573	2.93	3,141	285	50	10	4590.2	4,073	1,494	1,726	325	1,187	88	31	151	18,691	130	6.16	2.33	2.65	0.64	16.8	6.4	1.15	.269	3.38	7.99
16	Mike Mussina M. Mussina	270	153	.638	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	8.74
17	Burleigh Grimes B. Grimes	269	210	.562	610	493	3.53	1,517	314	35	17	4162.1	4,399		2,034	149	1,295	96	92		17,907	91	3.28	2.80	1.17	0.32	8.5	7.2	1.37	.286	4.40	9.51
18	Jim Palmer J. Palmer	268	152	.638	558	521	2.86	2,212	211	53	4	3948.0	3,349	1,253	1,395	303	1,311	38	15	37	16,117	87	5.04	2.99	1.69	0.69	13.7	8.1	1.18	.249	3.18	7.63
19	Bob Feller B. Feller	266	162	.621	570	484	3.26	2,581	279	44	22	3827.0	3,271	1,385	1,557	223	1,764	60	52	6	16,172	69	6.07	4.15	1.46	0.52	16.0	10.9	1.32	.264	3.66	7.69
20	Red Ruffing R. Ruffing	266	219	.548	608	522	3.80	1,961	331	43	18	4236.1	4,192	1,789	2,068	246	1,508	57	69		18,083	43	4.17	3.20	1.30	0.52	10.8	8.3	1.35	.276	4.39	8.91
21	Jim Kaat J. Kaat	264	220	.545	718	608	3.42	2,363	174	30	7	4232.2	4,285	1,610	1,888	376	996	120	40	84	17,741	120	5.02	2.12	2.37	0.80	13.3	5.6	1.25	.282	4.01	9.11
22	Nolan Ryan N. Ryan	261	242	.519	645	611	3.13	4,547	203	54	3	4326.0	3,144	1,505	1,718	242	2,355	117	13	67	18,190	219	9.46	4.90	1.93	0.50	25.0	12.9	1.27	.266	3.57	6.54
23	Justin Verlander J. Verlander	257	141	.646	509	509	3.24	3,342	26	9	0	3325.1	2,793	1,197	1,298	340	925	109	0	27	13,549	95	9.05	2.50	3.61	0.92	24.7	6.8	1.12	.278	3.51	7.56
24	Eppa Rixey E. Rixey	256	244	.512	653	533	3.16	1,330	279	34	14	4304.0	4,433		1,904	90	1,060	73	87			94	2.78	2.22	1.25	0.19		5.9	1.28	.282	3.98	9.27
25	Jack Morris J. Morris	254	186	.577	549	527	3.90	2,478	175	28	0	3824.0	3,567	1,657	1,815	389	1,390	58	10	99	16,120	205	5.83	3.27	1.78	0.92	15.4	8.6	1.30	.269	4.27	8.40