most career wins by a player before age 26

Walter Johnson has won the most career games by a pitcher younger than 26, with 146 wins.

Interpreted as:

most career regular-season wins by a player before age 26

	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	146	88	.624	259	218	0.27	1,399	187	42	8	1961.0	1,488		543	21	400	74	39			76	6.42	1.84	3.50	0.10		5.2	0.96	.255	2.49	6.83
2	Dwight Gooden D. Gooden	119	46	.721	211	209	2.82	1,391	54	20	1	1523.2	1,282	478	529	75	449	25	1	20	6,198	32	8.22	2.65	3.10	0.44	22.4	7.2	1.14	.283	3.12	7.57
3	Hal Newhouser H. Newhouser	117	83	.585	269	208	2.73	1,170	122	25	11	1670.1	1,395	506	618	48	779	8	45		7,049	38	6.30	4.20	1.50	0.26	16.6	11.1	1.30	.267	3.33	7.52
4	Joe Wood J. Wood	117	56	.676	218	157	0.69	996	121	28	8	1415.0	1,112		485	10	413	52	53			43	6.33	2.63	2.41	0.06		7.3	1.08	.262	3.08	7.07
5	Denny McLain D. McLain	114	57	.667	213	205	3.04	1,098	93	26	1	1501.2	1,221	507	554	176	422	19	2	16	6,041	22	6.58	2.53	2.60	1.05	18.2	7.0	1.09	.242	3.32	7.32
6	Bert Blyleven B. Blyleven	108	101	.517	252	249	2.80	1,546	115	30	0	1909.0	1,699	593	672	128	484	51	2	29	7,759	38	7.29	2.28	3.19	0.60	19.9	6.2	1.14	.283	3.17	8.01
7	Bob Feller B. Feller	107	54	.665	205	175	3.18	1,233	117	16	10	1448.1	1,149	512	569	58	815	26	24		6,187	46	7.66	5.06	1.51	0.36	19.9	13.2	1.36	.269	3.54	7.14
8	Pete Donohue P. Donohue	103	67	.606	220	182	3.30	417	105	15	10	1443.1	1,534		651	32	261	35	30		6,050	8	2.60	1.63	1.60	0.20	6.9	4.3	1.24	.283	4.06	9.57
9	Wes Ferrell W. Ferrell	102	62	.622	195	157	3.68	517	113	8	12	1319.1	1,375	539	646	54	527	8	30		5,758	15	3.53	3.59	0.98	0.37	9.0	9.2	1.44	.284	4.41	9.38
10	Fernando Valenzuela F. Valenzuela	99	68	.593	210	200	2.94	1,274	84	26	1	1554.2	1,295	507	589	86	540	10	4	40	6,363	54	7.38	3.13	2.36	0.50	20.0	8.5	1.18	.272	3.41	7.50
11	Milt Pappas M. Pappas	99	65	.604	234	202	3.31	829	75	24	4	1434.0	1,266	527	577	121	482	34	21	30	5,916	59	5.20	3.03	1.72	0.76	14.0	8.1	1.22	.257	3.62	7.95
12	Larry Dierker L. Dierker	98	75	.566	235	221	3.16	1,080	78	16	1	1623.0	1,476	570	641	123	434	27	5	29	6,678	67	5.99	2.41	2.49	0.68	16.2	6.5	1.18	.270	3.55	8.18
13	Dizzy Dean D. Dean	97	52	.651	195	137	2.99	780	96	17	19	1226.1	1,174	407	472	53	319	20	50		5,091	7	5.72	2.34	2.45	0.39	15.3	6.3	1.22	.286	3.46	8.62
14	Mel Harder M. Harder	97	79	.551	278	171	3.58	485	81	13	15	1485.1	1,612	591	739	51	446	26	68		6,451	14	2.94	2.70	1.09	0.31	7.5	6.9	1.39	.287	4.48	9.77
15	Don Drysdale D. Drysdale	96	68	.585	253	202	3.25	1,145	70	17	5	1498.1	1,349	541	602	144	457	77	33	45	6,252	34	6.88	2.75	2.51	0.86	18.3	7.3	1.21	.272	3.62	8.10
16	Catfish Hunter C. Hunter	94	89	.514	248	226	3.42	1,061	66	17	1	1586.1	1,389	603	671	176	502	28	4	36	6,554	24	6.02	2.85	2.11	1.00	16.2	7.7	1.19	.253	3.81	7.88
17	Bret Saberhagen B. Saberhagen	92	61	.601	205	179	3.24	875	52	12	1	1335.0	1,248	480	525	106	258	17	13	19	5,401	32	5.90	1.74	3.39	0.71	16.2	4.8	1.13	.276	3.54	8.41
18	Don Gullett D. Gullett	91	44	.674	236	156	3.03	777	35	13	11	1187.0	1,022	400	442	98	412	10	35	40	4,902	31	5.89	3.12	1.89	0.74	15.9	8.4	1.21	.256	3.35	7.75
19	Robin Roberts R. Roberts	91	57	.615	186	166	3.03	605	93	17	9	1322.2	1,236	446	495	96	321	19	16		5,409	12	4.12	2.18	1.88	0.65	11.2	5.9	1.18	.261	3.37	8.41
20	Van Mungo V. Mungo	91	76	.545	225	177	3.37	872	103	14	12	1442.1	1,323	540	627	55	567	15	37		6,125	34	5.44	3.54	1.54	0.34	14.2	9.3	1.31	.275	3.91	8.26
21	Waite Hoyt W. Hoyt	91	71	.562	239	170	3.51	472	96	11	14	1458.2	1,559	569	662	47	435	23	56		6,219	19	2.91	2.68	1.09	0.29	7.6	7.0	1.37	.288	4.08	9.62
22	Babe Ruth B. Ruth	90	46	.662	159	144	2.20	495	105	17	4	1194.1	937		380	9	435	29	11			27	3.73	3.28	1.14	0.07		9.0	1.15	.239	2.86	7.06
23	Dennis Eckersley D. Eckersley	89	64	.582	201	185	3.30	976	68	13	3	1346.0	1,196	493	532	144	396	34	8	40	5,578	17	6.53	2.65	2.46	0.96	17.5	7.1	1.18	.261	3.56	8.00
24	Frank Tanana F. Tanana	89	65	.578	187	182	2.95	1,107	84	24	0	1380.1	1,208	452	499	126	371	45	3	24	5,649	36	7.22	2.42	2.98	0.82	19.6	6.6	1.14	.271	3.25	7.88
25	Lefty Gomez L. Gomez	89	36	.712	165	126	3.22	669	79	12	9	1083.2	979	388	462	71	420	9	24		4,584	10	5.56	3.49	1.59	0.59	14.6	9.2	1.29	.266	3.84	8.13