Carl Hubbell, Walter Johnson and Ed Summers are tied for pitching the most innings in a game with exactly 0 runs allowed, with 18 innings.

Interpreted as:

most ip by a player in a regular-season game with 0 runs allowed

	NAME	IP	R	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	H	ER	HR	BB	HBP	GF	IBB	TBF	WP
1	Carl Hubbell C. Hubbell	18.0	0	7/2/1933	NYG	vs	SLN	W	1	0.00	12	1	1	0	6	0	0	0	0	0		59	0
2	Walter Johnson W. Johnson	18.0	0	5/15/1918	WSH	vs	CWS	W	1	0.00	9	1	1	0	10	0	0	1	0	0		62	0
3	Ed Summers E. Summers	18.0	0	7/16/1909	DET	vs	WSH		1		10	1	1	0	7		0	2	0	0		63	0
4	Rube Benton R. Benton	17.0	0	7/16/1920	NYG	@	PIT	W	1	0.00	4	1	1	0	9	0	0	2	0	0		60	0
5	Ernie Koob E. Koob	17.0	0	7/14/1916	SLA	@	BSA		1	0.00	3	1	1	0	14	0	0	3	2	0		69	0
6	Irv Young I. Young	17.0	0	8/22/1908	PIT	vs	BKN	W	1		3	1	1	0	9		0	3	0	0		62	0
7	Tom Hughes T. Hughes	17.0	0	9/21/1901	CHO	vs	BSN	W	1	0.00	13	1	1	0	8	0	0	5	0	0		60	0
8	Gaylord Perry G. Perry	16.0	0	9/1/1967	SFG	@	CIN		1	0.00	12	0	0	0	10	0	0	2	1	0	1	59	0
9	Juan Marichal J. Marichal	16.0	0	7/2/1963	SFG	vs	MIL	W	1	0.00	10	1	1	0	8	0	0	4	0	0	0	59	0
10	Jerry Walker J. Walker	16.0	0	9/11/1959	BAL	vs	CWS	W	1	0.00	4	1	1	0	6	0	0	3	0	0	0	55	0
11	Jack Harshman J. Harshman	16.0	0	8/13/1954	CWS	vs	DET	W	1	0.00	12	1	1	0	9	0	0	7	0	0	0	65	0
12	Walt Masterson W. Masterson	16.0	0	6/8/1947	WSH	@	CWS		1	0.00	7	0	0	0	6	0	0	6	0	0		59	0
13	Tex Carleton T. Carleton	16.0	0	7/2/1933	SLN	@	NYG		1	0.00	7	0	0	0	8	0	0	7	0	0		63	0
14	Phil Douglas P. Douglas	16.0	0	7/7/1915	BKN	vs	BSN		1	0.00	8	1	1	0	4	0	0	3	0	0		56	1
15	Russ Ford R. Ford	16.0	0	10/9/1914	BUF	@	PTF	W	1	0.00	3	1	1	0	5	0	0	1	0	0		55	0
16	Jack Coombs J. Coombs	16.0	0	8/4/1910	PHA	@	CWS		1		18	1	1	0	3		0	6	1	0		54	1
17	Ed Walsh E. Walsh	16.0	0	8/4/1910	CWS	vs	PHA		1		10	1	1	0	6		0	3	0	0		60	0
18	Erskine Mayer E. Mayer	15.1	0	8/1/1918	PIT	@	BSN		1	0.00	3	0	0	0	12	0	0	7	2	0		64	0
19	Rob Gardner R. Gardner	15.0	0	10/2/1965	NYM	vs	PHI		1	0.00	7	0	0	0	5	0	0	2	0	0	0	53	0
20	Chris Short C. Short	15.0	0	10/2/1965	PHI	@	NYM		1	0.00	18	0	0	0	9	0	0	3	0	0	1	56	0
21	Johnny Vander Meer J. Vander Meer	15.0	0	9/11/1946	CIN	@	BKN		1	0.00	14	0	0	0	7	0	0	2	0	0		54	0
22	Johnny Allen J. Allen	15.0	0	9/15/1941	BKN	@	CIN		1	0.00	3	0	0	0	6	0	0	4	0	0		54	0
23	Willis Hudlin W. Hudlin	15.0	0	8/24/1935	CLE	vs	PHA	W	1	0.00	6	1	1	0	8	0	0	1	0	0		54	0
24	Red Lucas R. Lucas	15.0	0	7/16/1933	CIN	vs	NYG	W	1	0.00	4	1	1	0	9	0	0	1	0	0		51	0
25	Walter Johnson W. Johnson	15.0	0	4/13/1926	WSH	vs	PHA	W	1	0.00	9	1	1	0	6	0	0	3	0	0		54	0