most wins by a pitcher before turning 23 since 1969

Since 1969, Roger Clemens has won the most games by a pitcher 23 or older, with 338 wins.

Interpreted as:

most regular-season wins by a pitcher before turning 23 years old since 1969

	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	Roger Clemens R. Clemens	338	176	.658	674	673	3.09	4,476	110	44	0	4690.0	3,959	1,608	1,781	345	1,515	154	0	60	19,276	138	8.59	2.91	2.95	0.66	23.2	7.9	1.17	.283	3.42	7.60
2	Greg Maddux G. Maddux	329	200	.622	672	672	3.04	3,103	98	31	0	4563.0	4,253	1,543	1,743	319	831	123	0	146	18,481	61	6.12	1.64	3.73	0.63	16.8	4.5	1.11	.279	3.44	8.39
3	Nolan Ryan N. Ryan	312	279	.528	759	744	3.18	5,483	217	61	2	5159.2	3,765	1,825	2,085	305	2,664	153	8	70	21,624	268	9.56	4.65	2.06	0.53	25.4	12.3	1.25	.266	3.64	6.57
4	Randy Johnson R. Johnson	303	166	.646	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	7.28
5	Steve Carlton S. Carlton	299	221	.575	653	637	3.24	3,760	231	47	1	4715.2	4,202	1,698	1,943	388	1,684	47	6	143	19,599	164	7.18	3.21	2.23	0.74	19.2	8.6	1.25	.278	3.71	8.02
6	Tom Glavine T. Glavine	296	182	.619	639	639	3.46	2,503	55	25	0	4167.2	4,042	1,604	1,755	339	1,404	55	0	134	17,522	62	5.41	3.03	1.78	0.73	14.3	8.0	1.31	.280	3.79	8.73
7	Don Sutton D. Sutton	290	214	.575	665	660	3.27	3,034	154	51	3	4616.1	4,098	1,677	1,852	429	1,175	71	4	74	18,906	100	5.92	2.29	2.58	0.84	16.0	6.2	1.14	.258	3.61	7.99
8	Phil Niekro P. Niekro	287	247	.537	702	661	3.45	2,999	220	39	10	4800.1	4,516	1,840	2,116	447	1,653	105	27	72	20,217	179	5.62	3.10	1.81	0.84	14.8	8.2	1.29	.271	3.97	8.47
9	Tom Seaver T. Seaver	279	180	.608	585	578	2.91	3,265	199	54	0	4254.0	3,523	1,376	1,516	346	1,264	63	4	106	17,252	113	6.91	2.67	2.58	0.73	18.9	7.3	1.13	.258	3.21	7.45
10	Jamie Moyer J. Moyer	269	209	.563	696	638	4.25	2,441	33	10	0	4074.0	4,231	1,926	2,076	522	1,155	146	15	69	17,356	57	5.39	2.55	2.11	1.15	14.1	6.7	1.32	.283	4.59	9.35
11	Mike Mussina M. Mussina	266	148	.643	525	524	3.70	2,761	55	23	0	3475.0	3,383	1,430	1,528	369	764	59	0	29	14,244	68	7.15	1.98	3.61	0.96	19.4	5.4	1.19	.293	3.96	8.76
12	Justin Verlander J. Verlander	262	147	.641	532	532	3.30	3,444	26	9	0	3446.1	2,916	1,264	1,368	360	962	115	0	27	14,069	96	8.99	2.51	3.58	0.94	24.5	6.8	1.13	.278	3.57	7.62
13	Andy Pettitte A. Pettitte	255	150	.630	522	517	3.85	2,428	25	4	0	3283.0	3,411	1,405	1,555	286	1,023	55	2	42	13,933	67	6.66	2.80	2.37	0.78	17.4	7.3	1.35	.308	4.26	9.35
14	Jack Morris J. Morris	253	185	.578	540	519	3.90	2,447	174	28	0	3767.0	3,521	1,633	1,790	384	1,361	57	10	99	15,884	203	5.85	3.25	1.80	0.92	15.4	8.6	1.30	.270	4.28	8.41
15	Bartolo Colon B. Colon	247	188	.568	565	552	4.12	2,535	38	13	0	3461.2	3,593	1,584	1,719	439	948	64	2	47	14,655	45	6.59	2.46	2.67	1.14	17.3	6.5	1.31	.296	4.47	9.34
16	Jim Palmer J. Palmer	245	137	.641	492	476	2.80	1,967	203	52	3	3598.2	3,064	1,119	1,245	270	1,144	36	8	35	14,661	74	4.92	2.86	1.72	0.68	13.4	7.8	1.17	.248	3.11	7.66
17	David Wells D. Wells	239	157	.604	660	489	4.13	2,201	54	12	13	3439.0	3,635	1,578	1,702	407	719	83	65	65	14,413	101	5.76	1.88	3.06	1.07	15.3	5.0	1.27	.293	4.45	9.51
18	Tommy John T. John	238	184	.564	600	569	3.49	1,680	130	32	1	3833.0	4,028	1,487	1,704	244	1,007	72	16	76	16,113	156	3.94	2.36	1.67	0.57	10.4	6.2	1.31	.289	4.00	9.46
19	Gaylord Perry G. Perry	238	195	.550	528	524	3.12	2,533	241	42	1	3989.2	3,714	1,384	1,605	304	1,040	82	4	101	16,367	111	5.71	2.35	2.44	0.69	15.5	6.4	1.19	.275	3.62	8.38
20	Fergie Jenkins F. Jenkins	236	189	.555	518	504	3.44	2,536	225	42	1	3706.2	3,500	1,418	1,576	402	795	74	9	89	15,215	53	6.16	1.93	3.19	0.98	16.7	5.2	1.16	.272	3.83	8.50
21	Dennis Martinez D. Martinez	227	182	.555	637	539	3.67	1,995	115	30	4	3748.1	3,656	1,530	1,709	356	1,070	114	31	64	15,694	75	4.79	2.57	1.86	0.85	12.7	6.8	1.26	.271	4.10	8.78
22	Bert Blyleven B. Blyleven	224	192	.538	547	543	3.47	2,850	184	42	0	3906.1	3,670	1,504	1,662	354	1,077	129	1	53	16,174	93	6.57	2.48	2.65	0.82	17.6	6.7	1.22	.282	3.83	8.46
23	Tim Hudson T. Hudson	222	133	.625	482	479	3.49	2,080	26	13	0	3126.2	2,957	1,213	1,319	248	917	124	0	84	13,005	84	5.99	2.64	2.27	0.71	16.0	7.1	1.24	.281	3.80	8.51
24	Kenny Rogers K. Rogers	219	156	.584	762	474	4.27	1,968	36	9	28	3302.2	3,457	1,568	1,739	339	1,175	127	133	53	14,280	79	5.36	3.20	1.67	0.92	13.8	8.2	1.40	.292	4.74	9.42
25	Curt Schilling C. Schilling	216	142	.603	560	431	3.42	3,106	83	20	22	3237.2	2,966	1,231	1,293	342	698	51	81	42	13,170	69	8.63	1.94	4.45	0.95	23.6	5.3	1.13	.292	3.59	8.24