most wins by a pitcher before age 23 since 1990

Since 1990, Felix Hernandez has won the most games by a pitcher younger than 23, with 40 wins.

Interpreted as:

most regular-season wins by a pitcher before age 23 since 1990

	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	Felix Hernandez F. Hernandez	40	36	.526	105	105	3.76	599	5	2	0	674.1	668	282	305	65	219	19	0	13	2,840	29	7.99	2.92	2.74	0.87	21.1	7.7	1.32	.311	4.07	8.92
2	Rick Porcello R. Porcello	38	30	.559	89	89	4.54	277	0	0	0	515.1	574	260	280	59	136	18	0	3	2,204	29	4.84	2.38	2.04	1.03	12.6	6.2	1.38	.300	4.89	10.02
3	CC Sabathia	38	21	.644	85	85	4.17	403	3	0	0	513.1	460	238	255	46	226	13	0	4	2,173	16	7.07	3.96	1.78	0.81	18.5	10.4	1.34	.279	4.47	8.06
4	Steve Avery S. Avery	32	31	.508	93	92	3.70	349	6	4	0	556.2	543	229	268	43	182	5	1	5	2,359	16	5.64	2.94	1.92	0.70	14.8	7.7	1.30	.281	4.33	8.78
5	Madison Bumgarner M. Bumgarner	31	25	.554	76	73	3.09	417	1	1	0	468.1	450	161	179	41	104	15	1	13	1,932	4	8.01	2.00	4.01	0.79	21.6	5.4	1.18	.302	3.44	8.65
6	Jeremy Bonderman J. Bonderman	31	45	.408	95	89	4.98	421	6	2	0	535.0	560	296	320	68	188	18	0	7	2,321	24	7.08	3.16	2.24	1.14	18.1	8.1	1.40	.303	5.38	9.42
7	Trevor Cahill T. Cahill	28	21	.571	62	62	3.76	208	1	1	0	375.1	340	157	172	46	135	10	0	2	1,556	7	4.99	3.24	1.54	1.10	13.4	8.7	1.27	.254	4.12	8.15
8	Ismael Valdez I. Valdez	27	19	.587	80	54	3.18	313	6	2	1	401.2	371	142	161	33	98	4	8	16	1,661	3	7.01	2.20	3.19	0.74	18.8	5.9	1.17	.279	3.61	8.31
9	Clayton Kershaw C. Kershaw	26	23	.531	85	83	3.17	497	1	1	0	483.0	388	170	179	31	224	9	1	16	2,019	23	9.26	4.17	2.22	0.58	24.6	11.1	1.27	.284	3.34	7.23
10	Dontrelle Willis D. Willis	24	17	.585	59	59	3.70	281	4	2	0	357.2	358	147	160	33	119	11	0	8	1,516	9	7.07	2.99	2.36	0.83	18.5	7.8	1.33	.303	4.03	9.01
11	Carlos Zambrano C. Zambrano	23	23	.500	80	59	3.38	328	4	2	0	397.1	347	149	173	24	185	23	4	16	1,703	14	7.43	4.19	1.77	0.54	19.3	10.9	1.34	.283	3.92	7.86
12	Matt Cain M. Cain	22	29	.431	71	70	3.73	372	3	1	0	437.0	354	181	189	36	185	11	1	5	1,831	22	7.66	3.81	2.01	0.74	20.3	10.1	1.23	.259	3.89	7.29
13	Scott Kazmir S. Kazmir	22	20	.524	64	63	3.73	378	1	1	0	364.0	337	151	171	31	173	14	0	6	1,580	16	9.35	4.28	2.18	0.77	23.9	10.9	1.40	.311	4.23	8.33
14	Jake Peavy J. Peavy	22	20	.524	58	58	3.90	299	0	0	0	346.0	333	150	160	46	134	11	0	8	1,482	6	7.78	3.49	2.23	1.20	20.2	9.0	1.35	.289	4.16	8.66
15	Jon Garland J. Garland	22	27	.449	82	61	4.71	212	1	1	1	372.1	386	195	222	49	177	14	9	3	1,633	12	5.12	4.28	1.20	1.18	13.0	10.8	1.51	.285	5.37	9.33
16	Mark Prior M. Prior	21	11	.656	45	45	2.77	347	4	1	0	299.1	250	92	104	27	80	15	0	3	1,224	9	10.43	2.41	4.34	0.81	28.3	6.5	1.10	.295	3.13	7.52
17	Pedro Martinez P. Martinez	21	11	.656	91	26	3.05	269	1	1	3	259.2	197	88	94	16	103	15	22	7	1,059	9	9.32	3.57	2.61	0.55	25.4	9.7	1.16	.276	3.26	6.83
18	Jose Fernandez J. Fernandez	20	8	.714	41	41	2.28	294	0	0	0	256.1	173	65	75	15	78	6	0	6	1,013	5	10.32	2.74	3.77	0.53	29.0	7.7	0.98	.255	2.63	6.07
19	Mark Buehrle M. Buehrle	20	9	.690	60	35	3.47	163	4	2	0	272.2	243	105	116	29	67	11	6	3	1,110	1	5.38	2.21	2.43	0.96	14.7	6.0	1.14	.255	3.83	8.02
20	Sidney Ponson S. Ponson	20	21	.488	63	52	4.93	197	6	0	1	345.0	384	189	200	54	122	4	5	4	1,485	8	5.14	3.18	1.61	1.41	13.3	8.2	1.47	.298	5.22	10.02
21	Jaret Wright J. Wright	20	13	.606	48	48	4.61	203	1	1	0	283.0	288	145	154	31	122	16	0	4	1,243	7	6.46	3.88	1.66	0.99	16.3	9.8	1.45	.295	4.90	9.16
22	Ramon Martinez R. Martinez	20	6	.769	33	33	2.92	223	12	3	0	234.1	191	76	89	22	67	4	0	5	950	3	8.56	2.57	3.33	0.84	23.5	7.1	1.10	.267	3.42	7.34
23	Mat Latos M. Latos	18	15	.545	41	41	3.29	228	1	1	0	235.1	193	86	92	23	73	2	0	4	960	5	8.72	2.79	3.12	0.88	23.8	7.6	1.13	.268	3.52	7.38
24	Brett Anderson B. Anderson	18	17	.514	49	49	3.57	225	1	1	0	287.2	292	114	135	26	67	10	0	3	1,205	4	7.04	2.10	3.36	0.81	18.7	5.6	1.25	.303	4.22	9.14
25	Dave Fleming D. Fleming	18	10	.643	42	36	3.62	123	7	4	0	246.0	244	99	108	16	63	7	3	3	1,019	9	4.50	2.30	1.95	0.59	12.1	6.2	1.25	.281	3.95	8.93