most wins by a rookie pitcher after 1950

Since 1951, Tom Browning, Bob Grim and Harvey Haddix are tied for winning the most games by a rookie, with 20 wins.

Interpreted as:

most regular-season wins by a rookie pitcher after 1950

	NAME	W	SEASON	TM	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	ERA-	FIP	FIP-	H/9	PRAA
1	Tom Browning T. Browning	20	1985	CIN	9	.690	38	38	3.55	155	6	4	0	261.1	242	103	111	29	73	3	0	8	1,083	2	5.34	2.51	2.12	1.00	14.3	6.7	1.21	.259	3.82	95	3.81	102	8.33	-1.9
2	Bob Grim B. Grim	20	1954	NYY	6	.769	37	20	3.26	108	8	1	1	199.0	175	72	78	9	85	3	8		825	4	4.88	3.84	1.27	0.41	13.1	10.3	1.31	.268	3.53	92	3.23	91	7.91	7.1
3	Harvey Haddix H. Haddix	20	1953	SLN	9	.690	36	33	3.06	163	19	6	1	253.0	220	86	97	24	69	4	2		1,031	9	5.80	2.45	2.36	0.85	15.8	6.7	1.14	.254	3.45	71	3.40	79	7.83	25.1
4	Mark Fidrych M. Fidrych	19	1976	DET	9	.679	31	29	2.34	97	24	4	0	250.1	217	65	76	12	53	3	2	3	996	6	3.49	1.91	1.83	0.43	9.7	5.3	1.08	.247	2.73	63	3.15	86	7.80	13.7
5	Jerry Koosman J. Koosman	19	1968	NYM	12	.613	35	34	2.08	178	17	7	0	263.2	221	61	72	16	69	8	0	7	1,058	8	6.08	2.36	2.58	0.55	16.8	6.5	1.10	.260	2.46	70	2.70	96	7.54	3.7
6	Wally Bunker W. Bunker	19	1964	BAL	5	.792	29	29	2.69	96	12	1	0	214.0	161	64	72	17	62	3	0	5	850	3	4.04	2.61	1.55	0.71	11.3	7.3	1.04	.214	3.03	77	3.65	100	6.77	-0.2
7	Gary Peters G. Peters	19	1963	CWS	8	.704	41	30	2.33	189	13	4	1	243.0	192	63	69	9	68	8	4	2	978	5	7.00	2.52	2.78	0.33	19.3	7.0	1.07	.260	2.56	67	2.34	67	7.11	32.1
8	Jack Sanford J. Sanford	19	1957	PHI	8	.704	33	33	3.08	188	15	3	0	236.2	194	81	94	22	94	3	0	2	989	12	7.15	3.57	2.00	0.84	19.0	9.5	1.22	.252	3.57	80	3.31	87	7.38	12.6
9	Lance Lynn L. Lynn	18	2012	STL	7	.720	35	29	3.78	180	0	0	0	176.0	168	74	76	16	64	10	2	3	744	3	9.20	3.27	2.81	0.82	24.2	8.6	1.32	.321	3.89	98	3.48	90	8.59	7.4
10	Carl Morton C. Morton	18	1970	MON	11	.621	43	37	3.60	154	10	4	0	284.2	281	114	123	27	125	4	1	17	1,218	2	4.87	3.95	1.23	0.85	12.6	10.3	1.43	.280	3.89	87	4.14	106	8.88	-6.8
11	Chuck Estrada C. Estrada	18	1960	BAL	11	.621	36	25	3.58	144	12	1	2	208.2	162	83	87	18	101	15	6	3	883	2	6.21	4.36	1.43	0.78	16.3	11.4	1.26	.238	3.75	97	3.94	104	6.99	-4
12	Justin Verlander J. Verlander	17	2006	DET	9	.654	30	30	3.63	124	1	1	0	186.0	187	75	78	21	60	6	0	1	776	5	6.00	2.90	2.07	1.02	16.0	7.7	1.33	.294	3.77	80	4.34	96	9.05	3.6
13	CC Sabathia	17	2001	CLE	5	.773	33	33	4.39	171	0	0	0	180.1	149	88	93	19	95	7	0	1	763	7	8.53	4.74	1.80	0.95	22.4	12.5	1.35	.276	4.64	98	4.21	94	7.44	5.2
14	Freddy Garcia F. Garcia	17	1999	SEA	8	.680	33	33	4.07	170	2	1	0	201.1	205	91	96	18	90	10	0	4	888	12	7.60	4.02	1.89	0.80	19.1	10.1	1.47	.312	4.29	87	4.09	87	9.16	13.7
15	Dave Fleming D. Fleming	17	1992	SEA	10	.630	33	33	3.39	112	7	4	0	228.1	225	86	95	13	60	4	0	3	946	8	4.41	2.36	1.87	0.51	11.8	6.3	1.25	.280	3.74	86	3.38	86	8.87	14.2
16	Tom Gordon T. Gordon	17	1989	KCR	9	.654	49	16	3.64	153	1	1	1	163.0	122	66	67	10	86	1	16	4	677	12	8.45	4.75	1.78	0.55	22.6	12.7	1.28	.262	3.70	94	3.28	89	6.74	7.3
17	Dwight Gooden D. Gooden	17	1984	NYM	9	.654	31	31	2.60	276	7	3	0	218.0	161	63	72	7	73	2	0	2	879	3	11.39	3.01	3.78	0.29	31.4	8.3	1.07	.296	2.97	74	1.68	48	6.65	44.6
18	Mark Langston M. Langston	17	1984	SEA	10	.630	35	33	3.40	204	5	2	0	225.0	188	85	99	16	118	8	0	5	965	4	8.16	4.72	1.73	0.64	21.1	12.2	1.36	.278	3.96	84	3.55	85	7.52	15.4
19	Rick Sutcliffe R. Sutcliffe	17	1979	LAD	10	.630	39	30	3.46	117	5	1	0	242.0	217	93	104	16	97	2	2	6	1,016	8	4.35	3.61	1.21	0.60	11.5	9.5	1.30	.256	3.87	95	3.84	101	8.07	-0.8
20	Stan Bahnsen S. Bahnsen	17	1968	NYY	12	.586	37	34	2.05	162	10	1	0	267.1	216	61	72	14	68	2	3	6	1,070	4	5.45	2.29	2.38	0.47	15.1	6.4	1.06	.245	2.42	73	2.64	88	7.27	10.1
21	Dakota Hudson D. Hudson	16	2019	STL	7	.696	33	32	3.35	136	0	0	1	174.2	160	65	80	22	86	9	1	8	757	5	7.01	4.43	1.58	1.13	18.0	11.4	1.41	.274	4.12	80	4.91	115	8.24	-12.7
22	Ryan Yarbrough R. Yarbrough	16	2018	TBR	6	.727	38	6	3.91	128	0	0	0	147.1	140	64	70	18	50	8	3	6	628	1	7.82	3.05	2.56	1.10	20.4	8.0	1.29	.288	4.28	95	4.19	103	8.55	-2.4
23	Kenta Maeda K. Maeda	16	2016	LAD	11	.593	32	32	3.48	179	0	0	0	175.2	150	68	72	20	50	8	0	6	716	6	9.17	2.56	3.58	1.02	25.0	7.0	1.14	.283	3.69	87	3.57	88	7.69	9.2
24	Matt Shoemaker M. Shoemaker	16	2014	LAA	4	.800	27	20	3.04	124	0	0	0	136.0	122	46	49	14	24	4	5	0	543	5	8.21	1.59	5.17	0.93	22.8	4.4	1.07	.286	3.24	84	3.26	89	8.07	6.3
25	Yu Darvish Y. Darvish	16	2012	TEX	9	.640	29	29	3.90	221	0	0	0	191.1	156	83	89	14	89	10	0	1	816	8	10.40	4.19	2.48	0.66	27.1	10.9	1.28	.295	4.19	90	3.28	77	7.34	20.3