the most games started with zero runs through 5 innings in a season

Ryne Stanek has the most starts with exactly 0 runs allowed in a season, with 22 starts in his rookie season in 2018.

Interpreted as:

the most games started by a player with zero runs through 5 innings in a season

	NAME	GS	R	SEASON	TM	G	W	L	W%	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Ryne Stanek R. Stanek	22	0	2018	TBR	46	2	0	1.000	0.00	67	0	0	0	53.0	21	0	0	20	1	8	1	193	2	11.38	3.40	3.35	0.00	34.7	10.4	0.77	.200	0.00	3.57
2	Ryne Stanek R. Stanek	18	0	2019	TOT	39	0	0		0.00	58	0	0	1	50.2	17	0	0	18	0	7	1	183	3	10.30	3.20	3.22	0.00	31.7	9.8	0.69	.159	0.00	3.02
3	Grover Alexander G. Alexander	16	0	1916	PHN	19	16	0	1.000	0.00	65	16	16	3	148.2	87	0	0	9	3	3		523	1	3.93	0.54	7.22	0.00	12.4	1.7	0.65	.195	0.00	5.27
4	Christy Mathewson C. Mathewson	14	0	1908	NYG	23	19	0	1.000		94	11	11	2	138.0	64		0	13	1	8		493	0	6.13	0.85	7.23	0.00	19.1	2.6	0.56	.166	0.00	4.17
5	Bob Gibson B. Gibson	13	0	1968	STL	13	13	0	1.000	0.00	112	13	13	0	118.0	59	0	0	18	2	0	0	422	0	8.54	1.37	6.22	0.00	26.5	4.3	0.65	.203	0.00	4.50
6	Dean Chance D. Chance	13	0	1964	LAA	19	13	0	1.000	0.00	109	11	11	4	132.1	54	0	0	31	1	6	3	474	1	7.41	2.11	3.52	0.00	23.0	6.5	0.64	.162	0.00	3.67
7	Sandy Koufax S. Koufax	13	0	1963	LAD	13	12	0	1.000	0.00	97	11	11	0	110.2	39	0	0	17	2	0	0	388	0	7.89	1.38	5.71	0.00	25.0	4.4	0.51	.143	0.00	3.17
8	Walter Johnson W. Johnson	13	0	1913	WSH	22	19	0	1.000	0.00	101	11	11	2	136.0	64	0	0	18	1	9		469	0	6.68	1.19	5.61	0.00	21.5	3.8	0.60	.183	0.00	4.24
9	Jack Coombs J. Coombs	13	0	1910	PHA	17	14	0	1.000		111	13	13	1	140.2	67		0	37	3	4		511	5	7.10	2.37	3.00	0.00	21.7	7.2	0.74	.186	0.00	4.29
10	Blake Snell B. Snell	12	0	2023	SDP	12	8	0	1.000	0.00	105	0	0	0	72.0	31	0	0	35	2	0	0	280	7	13.13	4.38	3.00	0.00	37.5	12.5	0.92	.225	0.00	3.88
11	Jack Flaherty J. Flaherty	12	0	2019	STL	12	7	0	1.000	0.00	94	0	0	0	79.1	39	0	0	15	5	0	1	290	3	10.66	1.70	6.27	0.00	32.4	5.2	0.68	.222	0.00	4.42
12	Adam Wainwright A. Wainwright	12	0	2014	STL	12	11	0	1.000	0.00	74	3	3	0	92.2	51	0	0	23	2	0	4	341	2	7.19	2.23	3.22	0.00	21.7	6.7	0.80	.211	0.00	4.95
13	Grover Alexander G. Alexander	12	0	1915	PHN	17	13	0	1.000	0.00	70	12	12	3	110.0	48	0	0	16	0	5		386	0	5.73	1.31	4.38	0.00	18.1	4.1	0.58	.160	0.00	3.93
14	Ed Walsh E. Walsh	12	0	1908	CWS	22	16	0	1.000		80	11	11	4	124.1	63		0	10	2	10		440	1	5.79	0.72	8.00	0.00	18.2	2.3	0.59	.181	0.00	4.56
15	Justin Verlander J. Verlander	11	0	2022	HOU	11	10	0	1.000	0.00	82	0	0	0	66.0	25	0	0	10	2	0	0	230	2	11.18	1.36	8.20	0.00	35.7	4.3	0.53	.184	0.00	3.41
16	Chad Green C. Green	11	0	2019	NYY	36	3	0	1.000	0.00	81	0	0	2	48.1	24	0	0	11	5	8	0	185	2	15.08	2.05	7.36	0.00	43.8	5.9	0.72	.273	0.00	4.47
17	Trevor Williams T. Williams	11	0	2018	PIT	11	11	0	1.000	0.00	51	1	1	0	68.2	39	0	0	23	2	0	0	261	1	6.68	3.01	2.22	0.00	19.5	8.8	0.90	.211	0.00	5.11
18	Zack Greinke Z. Greinke	11	0	2015	LAD	11	9	0	1.000	0.00	79	0	0	0	78.2	41	0	0	12	1	0	0	284	2	9.04	1.37	6.58	0.00	27.8	4.2	0.67	.214	0.00	4.69
19	Jake Arrieta J. Arrieta	11	0	2015	CHC	11	11	0	1.000	0.00	88	3	3	0	82.2	30	0	0	14	2	0	0	292	1	9.58	1.52	6.29	0.00	30.1	4.8	0.53	.160	0.00	3.27
20	Cliff Lee C. Lee	11	0	2011	PHI	11	11	0	1.000	0.00	82	6	6	0	92.2	50	0	0	15	2	0	0	330	0	7.96	1.46	5.47	0.00	24.8	4.5	0.70	.216	0.00	4.86
21	John Tudor J. Tudor	11	0	1985	STL	11	10	0	1.000	0.00	70	10	10	0	101.0	47	0	0	10	1	0	2	353	1	6.24	0.89	7.00	0.00	19.8	2.8	0.56	.173	0.00	4.19
22	Dwight Gooden D. Gooden	11	0	1985	NYM	11	9	0	1.000	0.00	111	8	8	0	98.0	53	0	0	22	1	0	1	357	0	10.19	2.02	5.05	0.00	31.1	6.2	0.77	.238	0.00	4.87
23	Vida Blue V. Blue	11	0	1971	OAK	11	9	0	1.000	0.00	94	8	8	0	92.0	39	0	0	19	2	0	0	327	3	9.20	1.86	4.95	0.00	28.7	5.8	0.63	.184	0.00	3.82
24	Bob Feller B. Feller	11	0	1946	CLE	14	10	0	1.000	0.00	104	10	10	2	101.2	51	0	0	38	0	3		386	2	9.21	3.36	2.74	0.00	26.9	9.8	0.88	.209	0.00	4.51
25	Stan Coveleski S. Coveleski	11	0	1917	CLE	17	10	0	1.000	0.00	46	9	9	4	98.2	45	0	0	31	0	5		370	1	4.20	2.83	1.48	0.00	12.4	8.4	0.77	.154	0.00	4.10