most wins to start a season without a loss for a pitcher

Jack Chesbro has the most wins in starts that he has won in a season, with 38 wins in 1904.

	NAME	W	L	GS	SEASON	TM	W%	L%	G	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	Jack Chesbro J. Chesbro	38	0	39	1904	NYH	1.000	.000	39	1.23	190	39	6	0	352.0	233	48	67	4	65	5	0		1,347	5	4.86	1.66	2.92	0.10	14.1	4.8	0.85	.211	1.71	5.96
2	Ed Walsh E. Walsh	35	0	35	1908	CWS	1.000	.000	35		175	34	11	0	330.0	223		40	0	39	8	0		1,246	5	4.77	1.06	4.49	0.00	14.0	3.1	0.79	.218	1.09	6.08
3	Grover Alexander G. Alexander	33	0	33	1916	PHN	1.000	.000	33	0.83	139	33	16	0	302.0	216	28	36	2	33	5	0		1,118	3	4.14	0.98	4.21	0.06	12.4	3.0	0.82	.228	1.07	6.44
4	Joe Wood J. Wood	33	0	33	1912	BSA	1.000	.000	33	0.31	222	30	10	0	291.2	220		72	2	58	10	0		1,136	5	6.85	1.79	3.83	0.06	19.5	5.1	0.95	.258	2.22	6.79
5	Christy Mathewson C. Mathewson	32	0	34	1908	NYG	1.000	.000	34		203	30	11	0	294.0	194		39	3	26	2	0		1,106	2	6.21	0.80	7.81	0.09	18.4	2.4	0.75	.219	1.19	5.94
6	Cy Young C. Young	32	0	32	1902	BSA	1.000	.000	32	1.38	133	32	3	0	299.0	232	46	71	2	39	6	0		1,149	2	4.00	1.17	3.41	0.06	11.6	3.4	0.91	.237	2.14	6.98
7	Denny McLain D. McLain	31	0	35	1968	DET	1.000	.000	35	1.70	259	28	6	0	302.0	209	57	62	24	52	5	0	1	1,145	3	7.72	1.55	4.98	0.72	22.6	4.5	0.86	.230	1.85	6.23
8	Joe McGinnity J. McGinnity	31	0	36	1904	NYG	1.000	.000	36		119	31	9	0	323.1	235		65	6	71	10	0		1,269	2	3.31	1.98	1.68	0.17	9.4	5.6	0.95	.215	1.81	6.54
9	Christy Mathewson C. Mathewson	31	0	34	1904	NYG	1.000	.000	34		158	24	4	0	278.0	206		57	4	57	4	0		1,080	6	5.12	1.85	2.77	0.13	14.6	5.3	0.95	.236	1.85	6.67
10	Cy Young C. Young	31	0	31	1901	BSA	1.000	.000	31	1.18	127	30	5	0	283.0	228	37	63	5	23	7	0			0	4.04	0.73	5.52	0.16		2.2	0.89	.251	2.00	7.25
11	Grover Alexander G. Alexander	30	0	31	1917	PHN	1.000	.000	31	1.16	148	30	8	0	287.0	218	37	49	3	38	5	0		1,099	1	4.64	1.19	3.89	0.09	13.5	3.5	0.89	.238	1.54	6.84
12	Grover Alexander G. Alexander	30	0	33	1915	PHN	1.000	.000	33	0.98	188	30	12	0	295.1	181	32	51	2	48	5	0		1,111	1	5.73	1.46	3.92	0.06	16.9	4.3	0.78	.206	1.55	5.52
13	Walter Johnson W. Johnson	29	0	29	1913	WSH	1.000	.000	29	0.61	168	23	11	0	252.0	149	17	26	5	31	4	0		927	1	6.00	1.11	5.42	0.18	18.1	3.3	0.71	.200	0.93	5.32
14	Christy Mathewson C. Mathewson	29	0	29	1905	NYG	1.000	.000	29		160	25	8	0	248.0	166		45	3	48	0	0		940	3	5.81	1.74	3.33	0.11	17.0	5.1	0.86	.224	1.63	6.02
15	Joe McGinnity J. McGinnity	29	0	30	1903	NYG	1.000	.000	30		108	28	3	0	263.2	201		68	1	66	10	0		1,052	4	3.69	2.25	1.64	0.03	10.3	6.3	1.01	.231	2.32	6.86
16	Robin Roberts R. Roberts	28	0	30	1952	PHN	1.000	.000	30	2.45	125	27	3	0	276.0	242	75	82	17	39	3	0		1,093	1	4.08	1.27	3.21	0.55	11.4	3.6	1.02	.248	2.67	7.89
17	Christy Mathewson C. Mathewson	28	0	29	1903	NYG	1.000	.000	29		179	26	3	0	255.1	212		75	3	60	5	0		1,027	14	6.31	2.11	2.98	0.11	17.4	5.8	1.07	.268	2.64	7.47
18	Bob Welch B. Welch	27	0	29	1990	OAK	1.000	.000	29	2.18	114	2	2	0	206.2	175	50	61	20	62	4	0	2	835	2	4.96	2.70	1.84	0.87	13.7	7.4	1.15	.244	2.66	7.62
19	Steve Carlton S. Carlton	27	0	31	1972	PHI	1.000	.000	31	1.44	235	24	8	0	268.0	189	43	48	11	57	1	0	4	1,023	7	7.89	1.91	4.12	0.37	23.0	5.6	0.92	.248	1.61	6.35
20	Sandy Koufax S. Koufax	27	0	32	1966	LAD	1.000	.000	32	1.26	268	24	5	0	263.1	192	37	46	11	60	0	0	3	1,030	6	9.16	2.05	4.47	0.38	26.0	5.8	0.96	.262	1.57	6.56
21	Bucky Walters B. Walters	27	0	28	1939	CIN	1.000	.000	28	1.76	104	26	2	0	250.1	183	49	59	9	80	3	0		985	4	3.74	2.88	1.30	0.32	10.6	8.1	1.05	.221	2.12	6.58
22	Lefty Grove L. Grove	27	0	27	1931	PHA	1.000	.000	27	1.79	126	25	4	0	241.1	203	48	65	8	55	1	0		966	1	4.70	2.05	2.29	0.30	13.0	5.7	1.07	.251	2.42	7.57
23	Dazzy Vance D. Vance	27	0	28	1924	BKN	1.000	.000	28	1.73	211	27	3	0	250.0	184	48	59	7	54	7	0		975	1	7.60	1.94	3.91	0.25	21.6	5.5	0.95	.254	2.12	6.62
24	Eddie Cicotte E. Cicotte	27	0	29	1919	CWS	1.000	.000	29	1.19	91	27	5	0	258.0	198	34	45	5	37	3	0		991	0	3.17	1.29	2.46	0.17	9.2	3.7	0.91	.226	1.57	6.91
25	Walter Johnson W. Johnson	27	0	27	1912	WSH	1.000	.000	27	0.19	203	25	7	0	235.0	162		41	0	42	6	0		895	7	7.77	1.61	4.83	0.00	22.7	4.7	0.87	.252	1.57	6.20