Walter Johnson has won the most career games by a pitcher younger than 25, with 110 wins.

Interpreted as:

most regular-season wins before turning 25 years old by a player

	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	110	81	.576	211	182	0.08	1,156	158	31	6	1614.2	1,256		487	12	360	66	28			74	6.44	2.01	3.21	0.07		5.7	1.00	.261	2.71	7.00
2	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
3	Joe Wood J. Wood	102	51	.667	193	141	0.59	933	111	25	6	1257.2	992		453	9	369	51	45			40	6.68	2.64	2.53	0.06		7.3	1.08	.266	3.24	7.10
4	Dwight Gooden D. Gooden	100	39	.719	177	175	2.64	1,168	52	19	1	1291.0	1,053	379	423	65	379	18	1	17	5,215	26	8.14	2.64	3.08	0.45	22.4	7.3	1.11	.276	2.95	7.34
5	Bert Blyleven B. Blyleven	95	85	.528	216	213	2.78	1,327	97	24	0	1611.1	1,416	498	566	114	403	39	2	23	6,534	31	7.41	2.25	3.29	0.64	20.3	6.2	1.13	.280	3.16	7.91
6	Hal Newhouser H. Newhouser	94	71	.570	231	173	2.86	895	94	19	10	1376.1	1,165	438	537	38	673	6	43		5,852	29	5.85	4.40	1.33	0.25	15.3	11.5	1.34	.266	3.51	7.62
7	Wes Ferrell W. Ferrell	91	50	.645	167	131	3.58	476	97	7	12	1118.1	1,150	445	538	46	457	6	28		4,878	14	3.83	3.68	1.04	0.37	9.8	9.4	1.44	.284	4.33	9.25
8	Denny McLain D. McLain	90	48	.652	171	164	3.11	917	70	17	1	1176.2	933	406	449	151	355	15	2	9	4,737	17	7.01	2.72	2.58	1.15	19.4	7.5	1.09	.237	3.43	7.14
9	Babe Ruth B. Ruth	89	46	.659	158	143	2.19	495	105	17	4	1190.1	934		376	9	433	29	11			27	3.74	3.27	1.14	0.07		9.0	1.15	.239	2.84	7.06
10	Larry Dierker L. Dierker	83	68	.550	205	191	3.14	965	66	11	1	1409.0	1,268	491	556	109	386	22	5	29	5,797	64	6.16	2.47	2.50	0.70	16.6	6.7	1.17	.269	3.55	8.10
11	Pete Donohue P. Donohue	83	53	.610	173	146	3.29	344	88	10	8	1157.2	1,236		518	26	222	26	22		4,858	7	2.67	1.73	1.55	0.20	7.1	4.6	1.26	.285	4.03	9.61
12	Milt Pappas M. Pappas	82	60	.577	198	167	3.41	678	60	16	4	1186.0	1,046	450	495	100	437	28	21	22	4,936	54	5.15	3.32	1.55	0.76	13.7	8.9	1.25	.256	3.76	7.94
13	Waite Hoyt W. Hoyt	82	57	.590	195	143	3.43	401	82	10	8	1243.1	1,303	474	550	36	362	22	41		5,274	14	2.90	2.62	1.11	0.26	7.6	6.9	1.34	.285	3.98	9.43
14	Don Gullett D. Gullett	80	41	.661	213	136	3.04	713	31	13	10	1061.0	903	358	394	90	364	10	34	37	4,373	24	6.05	3.09	1.96	0.76	16.3	8.3	1.19	.254	3.34	7.66
15	Fernando Valenzuela F. Valenzuela	78	57	.578	176	166	2.89	1,032	64	23	1	1285.1	1,069	413	485	68	455	9	4	35	5,261	41	7.23	3.19	2.27	0.48	19.6	8.6	1.19	.271	3.40	7.49
16	Dennis Eckersley D. Eckersley	77	50	.606	171	155	3.13	855	60	13	3	1148.1	1,008	399	431	119	352	32	8	33	4,760	17	6.70	2.76	2.43	0.93	18.0	7.4	1.18	.261	3.38	7.90
17	Frank Tanana F. Tanana	77	54	.588	159	154	2.72	1,010	79	21	0	1212.0	1,034	366	407	105	322	39	3	22	4,927	30	7.50	2.39	3.14	0.78	20.5	6.5	1.12	.269	3.02	7.68
18	Gary Nolan G. Nolan	76	47	.618	169	166	2.83	817	33	12	0	1156.2	981	364	407	89	336	12	1	36	4,720	22	6.36	2.61	2.43	0.69	17.3	7.1	1.14	.257	3.17	7.63
19	George Uhle G. Uhle	76	53	.589	190	125	3.92	313	71	9	9	1051.2	1,176		529	27	312	42	44		4,584	14	2.68	2.67	1.00	0.23	6.8	6.8	1.41	.295	4.53	10.06
20	Mel Harder M. Harder	75	68	.524	236	136	3.65	390	64	9	13	1198.0	1,299	486	619	45	393	26	61		5,246	13	2.93	2.95	0.99	0.34	7.4	7.5	1.41	.286	4.65	9.76
21	Catfish Hunter C. Hunter	73	79	.480	212	190	3.53	882	50	13	1	1319.1	1,170	518	574	151	424	24	4	29	5,471	22	6.02	2.89	2.08	1.03	16.1	7.7	1.21	.255	3.92	7.98
22	Don Drysdale D. Drysdale	73	60	.549	211	163	3.28	927	52	15	4	1201.2	1,084	438	486	115	383	67	30	36	5,033	29	6.94	2.87	2.42	0.86	18.4	7.6	1.22	.274	3.64	8.12
23	Felix Hernandez F. Hernandez	72	54	.571	174	174	3.18	1,053	14	4	0	1170.2	1,068	414	471	98	360	35	0	14	4,846	60	8.10	2.77	2.93	0.75	21.7	7.4	1.22	.294	3.62	8.21
24	Van Mungo V. Mungo	72	60	.545	182	141	3.50	623	77	12	7	1133.0	1,071	440	503	45	450	13	30		4,845	24	4.95	3.57	1.38	0.36	12.9	9.3	1.34	.276	4.00	8.51
25	Bret Saberhagen B. Saberhagen	70	55	.560	170	145	3.46	688	41	9	1	1081.2	1,042	416	450	92	216	15	13	13	4,409	24	5.72	1.80	3.19	0.77	15.6	4.9	1.16	.280	3.74	8.67