most innings pitched to start a season without an earned run

Lefty Tyler has pitched the most innings in a start with exactly 0 earned runs, with 21 innings versus the Phillies on July 17, 1918.

Interpreted as:

most innings pitched to regular-season start a season without an earned run by a player

	NAME	IP	GS	ER	DATE	TM		OPP	DEC	ERA	SO	CG	SHO	SV	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Lefty Tyler L. Tyler	21.0	1	0	7/17/1918	CHC	vs	PHN	W	0.00	8	1	0	0	13	1	0	1	0	0		77	0
2	Les Mueller L. Mueller	19.2	1	0	7/21/1945	DET	@	PHA		0.00	6	0	0	0	13	1	0	5	0	0		74	0
3	Dana Fillingim D. Fillingim	19.0	1	0	5/3/1920	BSN	vs	BKN	W	0.00	4	1	0	0	12	1	0	4	0	0		72	0
4	Carl Hubbell C. Hubbell	18.0	1	0	7/2/1933	NYG	vs	SLN	W	0.00	12	1	1	0	6	0	0	0	0	0		59	0
5	Walter Johnson W. Johnson	18.0	1	0	5/15/1918	WSH	vs	CWS	W	0.00	9	1	1	0	10	0	0	1	0	0		62	0
6	Rube Benton R. Benton	17.0	1	0	7/16/1920	NYG	@	PIT	W	0.00	4	1	1	0	9	0	0	2	0	0		60	0
7	Ernie Koob E. Koob	17.0	1	0	7/14/1916	SLA	@	BSA		0.00	3	1	1	0	14	0	0	3	2	0		69	0
8	Red Donahue R. Donahue	17.0	1	0	5/18/1902	SLA	@	CWS		0.00	2	1	0	0	14	2	0	5	0	0		73	0
9	Tom Hughes T. Hughes	17.0	1	0	9/21/1901	CHO	vs	BSN	W	0.00	13	1	1	0	8	0	0	5	0	0		60	0
10	Gaylord Perry G. Perry	16.0	1	0	9/1/1967	SFG	@	CIN		0.00	12	0	0	0	10	0	0	2	1	0	1	59	0
11	Juan Marichal J. Marichal	16.0	1	0	7/2/1963	SFG	vs	MIL	W	0.00	10	1	1	0	8	0	0	4	0	0	0	59	0
12	Jerry Walker J. Walker	16.0	1	0	9/11/1959	BAL	vs	CWS	W	0.00	4	1	1	0	6	0	0	3	0	0	0	55	0
13	Jack Harshman J. Harshman	16.0	1	0	8/13/1954	CWS	vs	DET	W	0.00	12	1	1	0	9	0	0	7	0	0	0	65	0
14	Walt Masterson W. Masterson	16.0	1	0	6/8/1947	WSH	@	CWS		0.00	7	0	0	0	6	0	0	6	0	0		59	0
15	Tex Carleton T. Carleton	16.0	1	0	7/2/1933	SLN	@	NYG		0.00	7	0	0	0	8	0	0	7	0	0		63	0
16	Howard Ehmke H. Ehmke	16.0	1	0	9/2/1919	DET	vs	CWS	W	0.00	3	1	0	0	17	3	0	7	0	0		70	1
17	Burleigh Grimes B. Grimes	16.0	1	0	7/18/1918	BKN	@	CHC	W	0.00	4	1	0	0	7	2	0	4	0	0		59	0
18	Phil Douglas P. Douglas	16.0	1	0	7/7/1915	BKN	vs	BSN		0.00	8	1	1	0	4	0	0	3	0	0		56	1
19	Russ Ford R. Ford	16.0	1	0	10/9/1914	BUF	@	PTF	W	0.00	3	1	1	0	5	0	0	1	0	0		55	0
20	Erskine Mayer E. Mayer	15.1	1	0	8/1/1918	PIT	@	BSN		0.00	3	0	0	0	12	0	0	7	2	0		64	0
21	Rob Gardner R. Gardner	15.0	1	0	10/2/1965	NYM	vs	PHI		0.00	7	0	0	0	5	0	0	2	0	0	0	53	0
22	Chris Short C. Short	15.0	1	0	10/2/1965	PHI	@	NYM		0.00	18	0	0	0	9	0	0	3	0	0	1	56	0
23	Johnny Vander Meer J. Vander Meer	15.0	1	0	9/11/1946	CIN	@	BKN		0.00	14	0	0	0	7	0	0	2	0	0		54	0
24	Johnny Allen J. Allen	15.0	1	0	9/15/1941	BKN	@	CIN		0.00	3	0	0	0	6	0	0	4	0	0		54	0
25	Willis Hudlin W. Hudlin	15.0	1	0	8/24/1935	CLE	vs	PHA	W	0.00	6	1	1	0	8	0	0	1	0	0		54	0